64757876020 has 24 divisors (see below), whose sum is σ = 136015858944. Its totient is φ = 25898518176.

The previous prime is 64757875999. The next prime is 64757876039. The reversal of 64757876020 is 2067875746.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173752 + ... + 399631.

It is an arithmetic number, because the mean of its divisors is an integer number (5667327456).

Almost surely, 2^64757876020 is an apocalyptic number.

It is an amenable number.

64757876020 is an abundant number, since it is smaller than the sum of its proper divisors (71257982924).

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

64757876020 is a wasteful number, since it uses less digits than its factorization.

64757876020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579039 (or 579037 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 52.

The spelling of 64757876020 in words is "sixty-four billion, seven hundred fifty-seven million, eight hundred seventy-six thousand, twenty".