51079706520 has 32 divisors (see below), whose sum is σ = 153239119920. Its totient is φ = 13621255040.

The previous prime is 51079706497. The next prime is 51079706521. The reversal of 51079706520 is 2560797015.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51079706521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212831991 + ... + 212832230.

Almost surely, 2^51079706520 is an apocalyptic number.

It is an amenable number.

51079706520 is an abundant number, since it is smaller than the sum of its proper divisors (102159413400).

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

51079706520 is a wasteful number, since it uses less digits than its factorization.

51079706520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425664235 (or 425664231 counting only the distinct ones).

The product of its (nonzero) digits is 132300, while the sum is 42.

The spelling of 51079706520 in words is "fifty-one billion, seventy-nine million, seven hundred six thousand, five hundred twenty".