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12608492805 = 345106329287
BaseRepresentation
bin10111011111000011…
…00101010100000101
31012112201002210120000
423233201211110011
5201310233232210
65443043431513
7624310264146
oct135741452405
935481083500
1012608492805
115390190297
12253a685599
13125c244c3c
14878775acd
154dbdb9ac0
hex2ef865505

12608492805 has 40 divisors (see below), whose sum is σ = 22623925632. Its totient is φ = 6717974112.

The previous prime is 12608492791. The next prime is 12608492857. The reversal of 12608492805 is 50829480621.

12608492805 is a `hidden beast` number, since 12 + 608 + 4 + 9 + 28 + 0 + 5 = 666.

12608492805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12608492805 - 210 = 12608491781 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 415872 + ... + 445158.

Almost surely, 212608492805 is an apocalyptic number.

12608492805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12608492805 is a deficient number, since it is larger than the sum of its proper divisors (10015432827).

12608492805 is a wasteful number, since it uses less digits than its factorization.

12608492805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30367 (or 30358 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 12608492805 in words is "twelve billion, six hundred eight million, four hundred ninety-two thousand, eight hundred five".

Divisors: 1 3 5 9 15 27 45 81 135 405 1063 3189 5315 9567 15945 28701 29287 47835 86103 87861 143505 146435 263583 430515 439305 790749 1317915 2372247 3953745 11861235 31132081 93396243 155660405 280188729 466981215 840566187 1400943645 2521698561 4202830935 12608492805