51982345792 has 28 divisors (see below), whose sum is σ = 111087274396. Its totient is φ = 23991851520.

The previous prime is 51982345787. The next prime is 51982345823. The reversal of 51982345792 is 29754328915.

It can be written as a sum of positive squares in 2 ways, for example, as 3342689856 + 48639655936 = 57816^2 + 220544^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31238559 + ... + 31240222.

It is an arithmetic number, because the mean of its divisors is an integer number (3967402657).

Almost surely, 2^51982345792 is an apocalyptic number.

51982345792 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51982345792 is an abundant number, since it is smaller than the sum of its proper divisors (59104928604).

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

51982345792 is a wasteful number, since it uses less digits than its factorization.

51982345792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62478806 (or 62478796 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 55.

The spelling of 51982345792 in words is "fifty-one billion, nine hundred eighty-two million, three hundred forty-five thousand, seven hundred ninety-two".