556166056560 has 40 divisors (see below), whose sum is σ = 1724114776080. Its totient is φ = 148310948352.

The previous prime is 556166056531. The next prime is 556166056571. The reversal of 556166056560 is 65650661655.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×556166056560² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 1158679045 + ... + 1158679524.

It is an arithmetic number, because the mean of its divisors is an integer number (43102869402).

Almost surely, 2^556166056560 is an apocalyptic number.

It is an amenable number.

556166056560 is an abundant number, since it is smaller than the sum of its proper divisors (1167948719520).

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

556166056560 is a wasteful number, since it uses less digits than its factorization.

556166056560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2317358585 (or 2317358579 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 51.

The spelling of 556166056560 in words is "five hundred fifty-six billion, one hundred sixty-six million, fifty-six thousand, five hundred sixty".