51398315712 has 84 divisors (see below), whose sum is σ = 155990138616. Its totient is φ = 16124958720.

The previous prime is 51398315707. The next prime is 51398315719. The reversal of 51398315712 is 21751389315.

51398315712 is a `hidden beast` number, since 513 + 9 + 83 + 1 + 57 + 1 + 2 = 666.

51398315712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51398315719) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2614714 + ... + 2634297.

Almost surely, 2^51398315712 is an apocalyptic number.

It is an amenable number.

51398315712 is an abundant number, since it is smaller than the sum of its proper divisors (104591822904).

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

51398315712 is a wasteful number, since it uses less digits than its factorization.

51398315712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5249046 (or 5249033 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The spelling of 51398315712 in words is "fifty-one billion, three hundred ninety-eight million, three hundred fifteen thousand, seven hundred twelve".