56145058666 has 16 divisors (see below), whose sum is σ = 86505363720. Its totient is φ = 27310141440.

The previous prime is 56145058657. The next prime is 56145058681. The reversal of 56145058666 is 66685054165.

It can be written as a sum of positive squares in 4 ways, for example, as 38270705641 + 17874353025 = 195629^2 + 133695^2 .

It is a super-2 number, since 2×56145058666² (a number of 22 digits) contains 22 as substring.

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, 551050 + ... + 644938.

Almost surely, 2^56145058666 is an apocalyptic number.

56145058666 is a deficient number, since it is larger than the sum of its proper divisors (30360305054).

56145058666 is a wasteful number, since it uses less digits than its factorization.

56145058666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102009.

The product of its (nonzero) digits is 5184000, while the sum is 52.

The spelling of 56145058666 in words is "fifty-six billion, one hundred forty-five million, fifty-eight thousand, six hundred sixty-six".