51494710836 has 48 divisors (see below), whose sum is σ = 124355851200. Its totient is φ = 16565240832.

The previous prime is 51494710811. The next prime is 51494710867. The reversal of 51494710836 is 63801749415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 733060 + ... + 800228.

It is an arithmetic number, because the mean of its divisors is an integer number (2590746900).

Almost surely, 2^51494710836 is an apocalyptic number.

It is an amenable number.

51494710836 is an abundant number, since it is smaller than the sum of its proper divisors (72861140364).

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

51494710836 is a wasteful number, since it uses less digits than its factorization.

51494710836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69408 (or 69406 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 51494710836 in words is "fifty-one billion, four hundred ninety-four million, seven hundred ten thousand, eight hundred thirty-six".