51031664162 has 8 divisors (see below), whose sum is σ = 76636819116. Its totient is φ = 25486057792.

The previous prime is 51031664137. The next prime is 51031664171. The reversal of 51031664162 is 26146613015.

51031664162 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 2 ways, for example, as 37267916401 + 13763747761 = 193049^2 + 117319^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14885003 + ... + 14888430.

Almost surely, 2^51031664162 is an apocalyptic number.

51031664162 is a deficient number, since it is larger than the sum of its proper divisors (25605154954).

51031664162 is a wasteful number, since it uses less digits than its factorization.

51031664162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29774292.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 51031664162 in words is "fifty-one billion, thirty-one million, six hundred sixty-four thousand, one hundred sixty-two".