51312922280 has 32 divisors (see below), whose sum is σ = 121530607200. Its totient is φ = 19444896576.

The previous prime is 51312922279. The next prime is 51312922291. The reversal of 51312922280 is 8222921315.

It is a self number, because there is not a number n which added to its sum of digits gives 51312922280.

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, 33757742 + ... + 33759261.

It is an arithmetic number, because the mean of its divisors is an integer number (3797831475).

Almost surely, 2^51312922280 is an apocalyptic number.

It is an amenable number.

51312922280 is an abundant number, since it is smaller than the sum of its proper divisors (70217684920).

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

51312922280 is a wasteful number, since it uses less digits than its factorization.

51312922280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67517033 (or 67517029 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 51312922280 in words is "fifty-one billion, three hundred twelve million, nine hundred twenty-two thousand, two hundred eighty".