640125211933710 has 64 divisors (see below), whose sum is σ = 1796842700179200. Its totient is φ = 161715843013536.

The previous prime is 640125211933703. The next prime is 640125211933819. The reversal of 640125211933710 is 17339112521046.

640125211933710 is a `hidden beast` number, since 6 + 4 + 0 + 1 + 2 + 521 + 1 + 93 + 37 + 1 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62390366404 + ... + 62390376663.

It is an arithmetic number, because the mean of its divisors is an integer number (28075667190300).

Almost surely, 2^{640125211933710} is an apocalyptic number.

640125211933710 is an abundant number, since it is smaller than the sum of its proper divisors (1156717488245490).

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

640125211933710 is a wasteful number, since it uses less digits than its factorization.

640125211933710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124780743102 (or 124780743096 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 640125211933710 in words is "six hundred forty trillion, one hundred twenty-five billion, two hundred eleven million, nine hundred thirty-three thousand, seven hundred ten".