640575314848 has 48 divisors (see below), whose sum is σ = 1454049334080. Its totient is φ = 272102777856.

The previous prime is 640575314833. The next prime is 640575314857. The reversal of 640575314848 is 848413575046.

It is a super-2 number, since 2×640575314848² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12628278 + ... + 12678901.

It is an arithmetic number, because the mean of its divisors is an integer number (30292694460).

Almost surely, 2^640575314848 is an apocalyptic number.

It is an amenable number.

640575314848 is an abundant number, since it is smaller than the sum of its proper divisors (813474019232).

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

640575314848 is a wasteful number, since it uses less digits than its factorization.

640575314848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25307309 (or 25307301 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 55.

The spelling of 640575314848 in words is "six hundred forty billion, five hundred seventy-five million, three hundred fourteen thousand, eight hundred forty-eight".