556051520646 has 48 divisors (see below), whose sum is σ = 1236854181888. Its totient is φ = 180457052400.

The previous prime is 556051520617. The next prime is 556051520681. The reversal of 556051520646 is 646025150655.

556051520646 is a `hidden beast` number, since 5 + 5 + 60 + 5 + 1 + 520 + 64 + 6 = 666.

It is a super-2 number, since 2×556051520646² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1559020 + ... + 1882191.

It is an arithmetic number, because the mean of its divisors is an integer number (25767795456).

Almost surely, 2^556051520646 is an apocalyptic number.

556051520646 is an abundant number, since it is smaller than the sum of its proper divisors (680802661242).

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

556051520646 is a wasteful number, since it uses less digits than its factorization.

556051520646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3441457 (or 3441454 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 45.

The spelling of 556051520646 in words is "five hundred fifty-six billion, fifty-one million, five hundred twenty thousand, six hundred forty-six".