51604236444 has 24 divisors (see below), whose sum is σ = 120419855248. Its totient is φ = 17199987840.

The previous prime is 51604236427. The next prime is 51604236461. The reversal of 51604236444 is 44463240615.

It is an interprime number because it is at equal distance from previous prime (51604236427) and next prime (51604236461).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21577 + ... + 321984.

Almost surely, 2^51604236444 is an apocalyptic number.

It is an amenable number.

51604236444 is an abundant number, since it is smaller than the sum of its proper divisors (68815618804).

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

51604236444 is a wasteful number, since it uses less digits than its factorization.

51604236444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356085 (or 356083 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 39.

The spelling of 51604236444 in words is "fifty-one billion, six hundred four million, two hundred thirty-six thousand, four hundred forty-four".