640059568272 has 80 divisors (see below), whose sum is σ = 1838160862080. Its totient is φ = 213242537088.

The previous prime is 640059568261. The next prime is 640059568283. The reversal of 640059568272 is 272865950046.

640059568272 is a `hidden beast` number, since 6 + 4 + 0 + 0 + 5 + 9 + 568 + 2 + 72 = 666.

It is an interprime number because it is at equal distance from previous prime (640059568261) and next prime (640059568283).

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 451813 + ... + 1218299.

It is an arithmetic number, because the mean of its divisors is an integer number (22977010776).

Almost surely, 2^640059568272 is an apocalyptic number.

It is an amenable number.

640059568272 is an abundant number, since it is smaller than the sum of its proper divisors (1198101293808).

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

640059568272 is a wasteful number, since it uses less digits than its factorization.

640059568272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768437 (or 768425 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 640059568272 in words is "six hundred forty billion, fifty-nine million, five hundred sixty-eight thousand, two hundred seventy-two".