64157060817 has 12 divisors (see below), whose sum is σ = 95660707584. Its totient is φ = 41391651960.

The previous prime is 64157060741. The next prime is 64157060819. The reversal of 64157060817 is 71806075146.

64157060817 is a `hidden beast` number, since 6 + 4 + 1 + 570 + 60 + 8 + 17 = 666.

64157060817 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 64157060817 - 2³² = 59862093521 is a prime.

It is a super-2 number, since 2×64157060817² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64157060819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114976533 + ... + 114977090.

It is an arithmetic number, because the mean of its divisors is an integer number (7971725632).

Almost surely, 2^64157060817 is an apocalyptic number.

It is an amenable number.

64157060817 is a deficient number, since it is larger than the sum of its proper divisors (31503646767).

64157060817 is a wasteful number, since it uses less digits than its factorization.

64157060817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229953660 (or 229953657 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 64157060817 in words is "sixty-four billion, one hundred fifty-seven million, sixty thousand, eight hundred seventeen".