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13421746249 = 991104912911
BaseRepresentation
bin11000111111111111…
…11001100001001001
31021122101101100112221
430133333321201021
5204441431334444
610055454334041
7653413650352
oct143777714111
937571340487
1013421746249
11576825367a
122726aba321
13135b8884b2
14914790d29
155384ada84
hex31fff9849

13421746249 has 8 divisors (see below), whose sum is σ = 13449139200. Its totient is φ = 13394383200.

The previous prime is 13421746241. The next prime is 13421746291. The reversal of 13421746249 is 94264712431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13421746249 - 23 = 13421746241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13421746241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1033104 + ... + 1046014.

It is an arithmetic number, because the mean of its divisors is an integer number (1681142400).

Almost surely, 213421746249 is an apocalyptic number.

It is an amenable number.

13421746249 is a deficient number, since it is larger than the sum of its proper divisors (27392951).

13421746249 is a wasteful number, since it uses less digits than its factorization.

13421746249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14951.

The product of its digits is 290304, while the sum is 43.

The spelling of 13421746249 in words is "thirteen billion, four hundred twenty-one million, seven hundred forty-six thousand, two hundred forty-nine".

Divisors: 1 991 1049 12911 1039559 12794801 13543639 13421746249