51659503404 has 12 divisors (see below), whose sum is σ = 120538841304. Its totient is φ = 17219834464.

The previous prime is 51659503397. The next prime is 51659503417. The reversal of 51659503404 is 40430595615.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 2152479297 + ... + 2152479320.

It is an arithmetic number, because the mean of its divisors is an integer number (10044903442).

Almost surely, 2^51659503404 is an apocalyptic number.

It is an amenable number.

51659503404 is an abundant number, since it is smaller than the sum of its proper divisors (68879337900).

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

51659503404 is a wasteful number, since it uses less digits than its factorization.

51659503404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4304958624 (or 4304958622 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 51659503404 in words is "fifty-one billion, six hundred fifty-nine million, five hundred three thousand, four hundred four".