51390903108 has 48 divisors (see below), whose sum is σ = 123920584704. Its totient is φ = 16558914720.

The previous prime is 51390903107. The next prime is 51390903133. The reversal of 51390903108 is 80130909315.

It is not an unprimeable number, because it can be changed into a prime (51390903107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252091 + ... + 407837.

It is an arithmetic number, because the mean of its divisors is an integer number (2581678848).

Almost surely, 2^51390903108 is an apocalyptic number.

It is an amenable number.

51390903108 is an abundant number, since it is smaller than the sum of its proper divisors (72529681596).

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

51390903108 is a wasteful number, since it uses less digits than its factorization.

51390903108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156672 (or 156670 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 39.

The spelling of 51390903108 in words is "fifty-one billion, three hundred ninety million, nine hundred three thousand, one hundred eight".