556111172784 has 20 divisors (see below), whose sum is σ = 1436620529816. Its totient is φ = 185370390912.

The previous prime is 556111172779. The next prime is 556111172807. The reversal of 556111172784 is 487271111655.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 11585649433 = 556111172784 / (5 + 5 + 6 + 1 + 1 + 1 + 1 + 7 + 2 + 7 + 8 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5792824669 + ... + 5792824764.

Almost surely, 2^556111172784 is an apocalyptic number.

It is an amenable number.

556111172784 is an abundant number, since it is smaller than the sum of its proper divisors (880509357032).

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

556111172784 is a wasteful number, since it uses less digits than its factorization.

556111172784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11585649444 (or 11585649438 counting only the distinct ones).

The product of its digits is 470400, while the sum is 48.

The spelling of 556111172784 in words is "five hundred fifty-six billion, one hundred eleven million, one hundred seventy-two thousand, seven hundred eighty-four".