64157939055 has 256 divisors, whose sum is σ = 142041600000. Its totient is φ = 27368699904.

The previous prime is 64157939039. The next prime is 64157939059. The reversal of 64157939055 is 55093975146.

64157939055 is a `hidden beast` number, since 6 + 415 + 7 + 93 + 90 + 55 = 666.

It is not a de Polignac number, because 64157939055 - 2⁴ = 64157939039 is a prime.

It is a super-2 number, since 2×64157939055² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64157938992 and 64157939010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64157939059) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 117290292 + ... + 117290838.

It is an arithmetic number, because the mean of its divisors is an integer number (554850000).

Almost surely, 2^64157939055 is an apocalyptic number.

64157939055 is an abundant number, since it is smaller than the sum of its proper divisors (77883660945).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64157939055 is a wasteful number, since it uses less digits than its factorization.

64157939055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748 (or 728 counting only the distinct ones).

The product of its (nonzero) digits is 5103000, while the sum is 54.

The spelling of 64157939055 in words is "sixty-four billion, one hundred fifty-seven million, nine hundred thirty-nine thousand, fifty-five".