51771271924 has 96 divisors (see below), whose sum is σ = 96311255040. Its totient is φ = 24326265600.

The previous prime is 51771271921. The next prime is 51771271969. The reversal of 51771271924 is 42917217715.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51771271921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99368784 + ... + 99369304.

It is an arithmetic number, because the mean of its divisors is an integer number (1003242240).

Almost surely, 2^51771271924 is an apocalyptic number.

It is an amenable number.

51771271924 is a deficient number, since it is larger than the sum of its proper divisors (44539983116).

51771271924 is a wasteful number, since it uses less digits than its factorization.

51771271924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821 (or 819 counting only the distinct ones).

The product of its digits is 246960, while the sum is 46.

The spelling of 51771271924 in words is "fifty-one billion, seven hundred seventy-one million, two hundred seventy-one thousand, nine hundred twenty-four".