51086518480004 has 36 divisors (see below), whose sum is σ = 104015241475740. Its totient is φ = 21890498837760.

The previous prime is 51086518479863. The next prime is 51086518480007. The reversal of 51086518480004 is 40008481568015.

It can be written as a sum of positive squares in 2 ways, for example, as 34464507939904 + 16622010540100 = 5870648^2 + 4077010^2 .

It is not an unprimeable number, because it can be changed into a prime (51086518480007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21007289 + ... + 23312640.

It is an arithmetic number, because the mean of its divisors is an integer number (2889312263215).

Almost surely, 2^{51086518480004} is an apocalyptic number.

It is an amenable number.

51086518480004 is an abundant number, since it is smaller than the sum of its proper divisors (52928722995736).

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

51086518480004 is a wasteful number, since it uses less digits than its factorization.

51086518480004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44325828 (or 44325819 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 50.

The spelling of 51086518480004 in words is "fifty-one trillion, eighty-six billion, five hundred eighteen million, four hundred eighty thousand, four".