645462560032 has 24 divisors (see below), whose sum is σ = 1271516820336. Its totient is φ = 322537653312.

The previous prime is 645462559999. The next prime is 645462560059. The reversal of 645462560032 is 230065264546.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5996658 + ... + 6103345.

It is an arithmetic number, because the mean of its divisors is an integer number (52979867514).

Almost surely, 2^645462560032 is an apocalyptic number.

It is an amenable number.

645462560032 is a deficient number, since it is larger than the sum of its proper divisors (626054260304).

645462560032 is a wasteful number, since it uses less digits than its factorization.

645462560032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12101680 (or 12101672 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 43.

The spelling of 645462560032 in words is "six hundred forty-five billion, four hundred sixty-two million, five hundred sixty thousand, thirty-two".