51108265506 has 32 divisors (see below), whose sum is σ = 106145722368. Its totient is φ = 16387805520.

The previous prime is 51108265499. The next prime is 51108265519. The reversal of 51108265506 is 60556280115.

51108265506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51108265506² (a number of 22 digits) contains 22 as substring.

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, 791620 + ... + 853743.

It is an arithmetic number, because the mean of its divisors is an integer number (3317053824).

Almost surely, 2^51108265506 is an apocalyptic number.

51108265506 is an abundant number, since it is smaller than the sum of its proper divisors (55037456862).

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

51108265506 is a wasteful number, since it uses less digits than its factorization.

51108265506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645566.

The product of its (nonzero) digits is 72000, while the sum is 39.

The spelling of 51108265506 in words is "fifty-one billion, one hundred eight million, two hundred sixty-five thousand, five hundred six".