51007427086440 has 128 divisors (see below), whose sum is σ = 167380941974400. Its totient is φ = 12332285445120.

The previous prime is 51007427086439. The next prime is 51007427086471. The reversal of 51007427086440 is 4468072470015.

It is a self number, because there is not a number n which added to its sum of digits gives 51007427086440.

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 31 ways as a sum of consecutive naturals, for example, 51306555 + ... + 52291274.

It is an arithmetic number, because the mean of its divisors is an integer number (1307663609175).

Almost surely, 2^{51007427086440} is an apocalyptic number.

It is an amenable number.

51007427086440 is an abundant number, since it is smaller than the sum of its proper divisors (116373514887960).

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

51007427086440 is a wasteful number, since it uses less digits than its factorization.

51007427086440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103598227 (or 103598223 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 48.

The spelling of 51007427086440 in words is "fifty-one trillion, seven billion, four hundred twenty-seven million, eighty-six thousand, four hundred forty".