64166958688 has 72 divisors (see below), whose sum is σ = 152374500432. Its totient is φ = 26052717312.

The previous prime is 64166958659. The next prime is 64166958697. The reversal of 64166958688 is 88685966146.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 315895 + ... + 477622.

It is an arithmetic number, because the mean of its divisors is an integer number (2116312506).

Almost surely, 2^64166958688 is an apocalyptic number.

It is an amenable number.

64166958688 is an abundant number, since it is smaller than the sum of its proper divisors (88207541744).

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

64166958688 is a wasteful number, since it uses less digits than its factorization.

64166958688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793572 (or 793545 counting only the distinct ones).

The product of its digits is 119439360, while the sum is 67.

The spelling of 64166958688 in words is "sixty-four billion, one hundred sixty-six million, nine hundred fifty-eight thousand, six hundred eighty-eight".