64757875620 has 48 divisors (see below), whose sum is σ = 183359393280. Its totient is φ = 17074734336.

The previous prime is 64757875573. The next prime is 64757875639. The reversal of 64757875620 is 2657875746.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6058132 + ... + 6068811.

It is an arithmetic number, because the mean of its divisors is an integer number (3819987360).

Almost surely, 2^64757875620 is an apocalyptic number.

64757875620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64757875620 is an abundant number, since it is smaller than the sum of its proper divisors (118601517660).

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

64757875620 is a wasteful number, since it uses less digits than its factorization.

64757875620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12127044 (or 12127042 counting only the distinct ones).

The product of its (nonzero) digits is 19756800, while the sum is 57.

The spelling of 64757875620 in words is "sixty-four billion, seven hundred fifty-seven million, eight hundred seventy-five thousand, six hundred twenty".