1056557046566 has 16 divisors (see below), whose sum is σ = 1815274605600. Its totient is φ = 451801674240.

The previous prime is 1056557046541. The next prime is 1056557046577. The reversal of 1056557046566 is 6656407556501.

It is a happy number.

It is a super-2 number, since 2×1056557046566² (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, 84034205 + ... + 84046776.

It is an arithmetic number, because the mean of its divisors is an integer number (113454662850).

Almost surely, 2^{1056557046566} is an apocalyptic number.

1056557046566 is a deficient number, since it is larger than the sum of its proper divisors (758717559034).

1056557046566 is a wasteful number, since it uses less digits than its factorization.

1056557046566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168081439.

The product of its (nonzero) digits is 22680000, while the sum is 56.

The spelling of 1056557046566 in words is "one trillion, fifty-six billion, five hundred fifty-seven million, forty-six thousand, five hundred sixty-six".