51017471531358 has 64 divisors (see below), whose sum is σ = 107526273334272. Its totient is φ = 16105317972480.

The previous prime is 51017471531347. The next prime is 51017471531399. The reversal of 51017471531358 is 85313517471015.

It is a self number, because there is not a number n which added to its sum of digits gives 51017471531358.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71810998 + ... + 72517958.

It is an arithmetic number, because the mean of its divisors is an integer number (1680098020848).

Almost surely, 2^{51017471531358} is an apocalyptic number.

51017471531358 is an abundant number, since it is smaller than the sum of its proper divisors (56508801802914).

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

51017471531358 is a wasteful number, since it uses less digits than its factorization.

51017471531358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712169.

The product of its (nonzero) digits is 1764000, while the sum is 51.

The spelling of 51017471531358 in words is "fifty-one trillion, seventeen billion, four hundred seventy-one million, five hundred thirty-one thousand, three hundred fifty-eight".