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64021042141 = 761149932183
BaseRepresentation
bin111011100111111100…
…111001001111011101
320010020201212220120221
4323213330321033131
52022103341322031
645224425041341
74424333610430
oct734774711735
9203221786527
1064021042141
1125173233591
12104a8626251
136063838474
143154923817
1519ea782a11
hexee7f393dd

64021042141 has 8 divisors (see below), whose sum is σ = 74366363264. Its totient is φ = 53975585520.

The previous prime is 64021042103. The next prime is 64021042157. The reversal of 64021042141 is 14124012046.

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 64021042141 - 29 = 64021041629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64021042541) 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, 74965665 + ... + 74966518.

It is an arithmetic number, because the mean of its divisors is an integer number (9295795408).

Almost surely, 264021042141 is an apocalyptic number.

64021042141 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

64021042141 is a deficient number, since it is larger than the sum of its proper divisors (10345321123).

64021042141 is a wasteful number, since it uses less digits than its factorization.

64021042141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149932251.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 64021042141 its reverse (14124012046), we get a palindrome (78145054187).

The spelling of 64021042141 in words is "sixty-four billion, twenty-one million, forty-two thousand, one hundred forty-one".

Divisors: 1 7 61 427 149932183 1049525281 9145863163 64021042141