556566661110 has 64 divisors (see below), whose sum is σ = 1364694609600. Its totient is φ = 145237204992.

The previous prime is 556566661093. The next prime is 556566661127. The reversal of 556566661110 is 11166665655.

It is an interprime number because it is at equal distance from previous prime (556566661093) and next prime (556566661127).

It is a self number, because there is not a number n which added to its sum of digits gives 556566661110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 815505 + ... + 1333484.

It is an arithmetic number, because the mean of its divisors is an integer number (21323353275).

Almost surely, 2^556566661110 is an apocalyptic number.

556566661110 is an abundant number, since it is smaller than the sum of its proper divisors (808127948490).

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

556566661110 is a wasteful number, since it uses less digits than its factorization.

556566661110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149185.

The product of its (nonzero) digits is 972000, while the sum is 48.

The spelling of 556566661110 in words is "five hundred fifty-six billion, five hundred sixty-six million, six hundred sixty-one thousand, one hundred ten".