555500551056 has 320 divisors, whose sum is σ = 1655703742464. Its totient is φ = 158844928000.

The previous prime is 555500550971. The next prime is 555500551061. The reversal of 555500551056 is 650155005555.

It is a junction number, because it is equal to n+sod(n) for n = 555500550999 and 555500551017.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 432969391 + ... + 432970673.

Almost surely, 2^555500551056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 555500551056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (827851871232).

555500551056 is an abundant number, since it is smaller than the sum of its proper divisors (1100203191408).

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

555500551056 is a wasteful number, since it uses less digits than its factorization.

555500551056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782 (or 1776 counting only the distinct ones).

The product of its (nonzero) digits is 468750, while the sum is 42.

The spelling of 555500551056 in words is "five hundred fifty-five billion, five hundred million, five hundred fifty-one thousand, fifty-six".