51352505604 has 48 divisors (see below), whose sum is σ = 133148615040. Its totient is φ = 17115896160.

The previous prime is 51352505573. The next prime is 51352505623. The reversal of 51352505604 is 40650525315.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1889794 + ... + 1916774.

It is an arithmetic number, because the mean of its divisors is an integer number (2773929480).

Almost surely, 2^51352505604 is an apocalyptic number.

51352505604 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

51352505604 is an abundant number, since it is smaller than the sum of its proper divisors (81796109436).

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

51352505604 is a wasteful number, since it uses less digits than its factorization.

51352505604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44617 (or 44609 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The spelling of 51352505604 in words is "fifty-one billion, three hundred fifty-two million, five hundred five thousand, six hundred four".