51315405352860 has 48 divisors (see below), whose sum is σ = 156745238170752. Its totient is φ = 12440098267200.

The previous prime is 51315405352853. The next prime is 51315405352889. The reversal of 51315405352860 is 6825350451315.

It is a super-2 number, since 2×51315405352860² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

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, 38875306426 + ... + 38875307745.

It is an arithmetic number, because the mean of its divisors is an integer number (3265525795224).

Almost surely, 2^{51315405352860} is an apocalyptic number.

It is an amenable number.

51315405352860 is an abundant number, since it is smaller than the sum of its proper divisors (105429832817892).

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

51315405352860 is a wasteful number, since it uses less digits than its factorization.

51315405352860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77750614194 (or 77750614192 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 48.

The spelling of 51315405352860 in words is "fifty-one trillion, three hundred fifteen billion, four hundred five million, three hundred fifty-two thousand, eight hundred sixty".