551916366578 has 16 divisors (see below), whose sum is σ = 837628771200. Its totient is φ = 272717780256.

The previous prime is 551916366517. The next prime is 551916366587. The reversal of 551916366578 is 875663619155.

It is a super-2 number, since 2×551916366578² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 551916366578.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2650403 + ... + 2851046.

It is an arithmetic number, because the mean of its divisors is an integer number (52351798200).

Almost surely, 2^551916366578 is an apocalyptic number.

551916366578 is a deficient number, since it is larger than the sum of its proper divisors (285712404622).

551916366578 is a wasteful number, since it uses less digits than its factorization.

551916366578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5502041.

The product of its digits is 40824000, while the sum is 62.

The spelling of 551916366578 in words is "five hundred fifty-one billion, nine hundred sixteen million, three hundred sixty-six thousand, five hundred seventy-eight".