1055566056566 has 16 divisors (see below), whose sum is σ = 1812123200160. Its totient is φ = 451740105600.

The previous prime is 1055566056553. The next prime is 1055566056607. The reversal of 1055566056566 is 6656506655501.

It is a super-2 number, since 2×1055566056566² (a number of 25 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, 53768771 + ... + 53788398.

It is an arithmetic number, because the mean of its divisors is an integer number (113257700010).

Almost surely, 2^{1055566056566} is an apocalyptic number.

1055566056566 is a deficient number, since it is larger than the sum of its proper divisors (756557143594).

1055566056566 is a wasteful number, since it uses less digits than its factorization.

1055566056566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107557879.

The product of its (nonzero) digits is 24300000, while the sum is 56.

The spelling of 1055566056566 in words is "one trillion, fifty-five billion, five hundred sixty-six million, fifty-six thousand, five hundred sixty-six".