51465236326220 has 24 divisors (see below), whose sum is σ = 108126055386384. Its totient is φ = 20576749939776.

The previous prime is 51465236326187. The next prime is 51465236326241. The reversal of 51465236326220 is 2262363256415.

It is a super-2 number, since 2×51465236326220² (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 7 ways as a sum of consecutive naturals, for example, 583991759 + ... + 584079878.

It is an arithmetic number, because the mean of its divisors is an integer number (4505252307766).

Almost surely, 2^{51465236326220} is an apocalyptic number.

It is an amenable number.

51465236326220 is an abundant number, since it is smaller than the sum of its proper divisors (56660819060164).

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

51465236326220 is a wasteful number, since it uses less digits than its factorization.

51465236326220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168073849 (or 1168073847 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 47.

The spelling of 51465236326220 in words is "fifty-one trillion, four hundred sixty-five billion, two hundred thirty-six million, three hundred twenty-six thousand, two hundred twenty".