626164531872 has 96 divisors (see below), whose sum is σ = 1871068792320. Its totient is φ = 181496958720.

The previous prime is 626164531843. The next prime is 626164531873. The reversal of 626164531872 is 278135461626.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (626164531873) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12866122 + ... + 12914697.

It is an arithmetic number, because the mean of its divisors is an integer number (19490299920).

Almost surely, 2^626164531872 is an apocalyptic number.

It is an amenable number.

626164531872 is an abundant number, since it is smaller than the sum of its proper divisors (1244904260448).

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

626164531872 is a wasteful number, since it uses less digits than its factorization.

626164531872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25780866 (or 25780858 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 51.

The spelling of 626164531872 in words is "six hundred twenty-six billion, one hundred sixty-four million, five hundred thirty-one thousand, eight hundred seventy-two".