66513023250504 has 64 divisors (see below), whose sum is σ = 167015307896640. Its totient is φ = 22073382144000.

The previous prime is 66513023250481. The next prime is 66513023250521. The reversal of 66513023250504 is 40505232031566.

It is a happy number.

66513023250504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11996512 + ... + 16641584.

It is an arithmetic number, because the mean of its divisors is an integer number (2609614185885).

Almost surely, 2^{66513023250504} is an apocalyptic number.

It is an amenable number.

66513023250504 is an abundant number, since it is smaller than the sum of its proper divisors (100502284646136).

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

66513023250504 is a wasteful number, since it uses less digits than its factorization.

66513023250504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4647710 (or 4647706 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 66513023250504 in words is "sixty-six trillion, five hundred thirteen billion, twenty-three million, two hundred fifty thousand, five hundred four".