644014114504 has 8 divisors (see below), whose sum is σ = 1207526464710. Its totient is φ = 322007057248.

The previous prime is 644014114477. The next prime is 644014114573. The reversal of 644014114504 is 405411410446.

644014114504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 536365816900 + 107648297604 = 732370^2 + 328098^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 644014114504.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40250882149 + ... + 40250882164.

Almost surely, 2^644014114504 is an apocalyptic number.

It is an amenable number.

644014114504 is a deficient number, since it is larger than the sum of its proper divisors (563512350206).

644014114504 is a wasteful number, since it uses less digits than its factorization.

644014114504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80501764319 (or 80501764315 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The spelling of 644014114504 in words is "six hundred forty-four billion, fourteen million, one hundred fourteen thousand, five hundred four".