51806712488 has 16 divisors (see below), whose sum is σ = 97155819360. Its totient is φ = 25898494000.

The previous prime is 51806712467. The next prime is 51806712491. The reversal of 51806712488 is 88421760815.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562298 + ... + 647913.

It is an arithmetic number, because the mean of its divisors is an integer number (6072238710).

Almost surely, 2^51806712488 is an apocalyptic number.

It is an amenable number.

51806712488 is a deficient number, since it is larger than the sum of its proper divisors (45349106872).

51806712488 is a wasteful number, since it uses less digits than its factorization.

51806712488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215568 (or 1215564 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 50.

The spelling of 51806712488 in words is "fifty-one billion, eight hundred six million, seven hundred twelve thousand, four hundred eighty-eight".