51397957162112 has 120 divisors (see below), whose sum is σ = 112654616482425. Its totient is φ = 23358246714880.

The previous prime is 51397957162063. The next prime is 51397957162159. The reversal of 51397957162112 is 21126175979315.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 43749546550336 + 7648410611776 = 6614344^2 + 2765576^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=5069416.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 9814386758 + ... + 9814391994.

Almost surely, 2^{51397957162112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51397957162112

51397957162112 is an abundant number, since it is smaller than the sum of its proper divisors (61256659320313).

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

51397957162112 is an frugal number, since it uses more digits than its factorization.

51397957162112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10532 (or 5250 counting only the distinct ones).

The product of its digits is 7144200, while the sum is 59.

The spelling of 51397957162112 in words is "fifty-one trillion, three hundred ninety-seven billion, nine hundred fifty-seven million, one hundred sixty-two thousand, one hundred twelve".