51321544512315 has 64 divisors (see below), whose sum is σ = 104465799705600. Its totient is φ = 21328434059520.

The previous prime is 51321544512283. The next prime is 51321544512347.

51321544512315 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (51321544512283) and next prime (51321544512347).

It is not a de Polignac number, because 51321544512315 - 2⁵ = 51321544512283 is a prime.

It is a super-2 number, since 2×51321544512315² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 453353994 + ... + 453467183.

It is an arithmetic number, because the mean of its divisors is an integer number (1632278120400).

Almost surely, 2^{51321544512315} is an apocalyptic number.

51321544512315 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51321544512315 is an abundant number, since it is smaller than the sum of its proper divisors (53144255193285).

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

51321544512315 is a wasteful number, since it uses less digits than its factorization.

51321544512315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906821217 (or 906821203 counting only the distinct ones).

The product of its digits is 360000, while the sum is 42.

It can be divided in two parts, 5132154 and 4512315, that added together give a palindrome (9644469).

The spelling of 51321544512315 in words is "fifty-one trillion, three hundred twenty-one billion, five hundred forty-four million, five hundred twelve thousand, three hundred fifteen".