64113796864 has 36 divisors (see below), whose sum is σ = 137821552456. Its totient is φ = 29590981632.

The previous prime is 64113796853. The next prime is 64113796867. The reversal of 64113796864 is 46869731146.

It is a super-2 number, since 2×64113796864² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64113796867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9629154 + ... + 9635809.

Almost surely, 2^64113796864 is an apocalyptic number.

64113796864 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

64113796864 is an abundant number, since it is smaller than the sum of its proper divisors (73707755592).

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

64113796864 is a wasteful number, since it uses less digits than its factorization.

64113796864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19264992 (or 19264978 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 55.

The spelling of 64113796864 in words is "sixty-four billion, one hundred thirteen million, seven hundred ninety-six thousand, eight hundred sixty-four".