51131496174 has 64 divisors (see below), whose sum is σ = 112750589952. Its totient is φ = 15329865600.

The previous prime is 51131496149. The next prime is 51131496187. The reversal of 51131496174 is 47169413115.

It is a happy number.

It is a super-2 number, since 2×51131496174² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2342499 + ... + 2364225.

It is an arithmetic number, because the mean of its divisors is an integer number (1761727968).

Almost surely, 2^51131496174 is an apocalyptic number.

51131496174 is an abundant number, since it is smaller than the sum of its proper divisors (61619093778).

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

51131496174 is a wasteful number, since it uses less digits than its factorization.

51131496174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22121.

The product of its digits is 90720, while the sum is 42.

The spelling of 51131496174 in words is "fifty-one billion, one hundred thirty-one million, four hundred ninety-six thousand, one hundred seventy-four".