10666564794 has 24 divisors (see below), whose sum is σ = 23189778612. Its totient is φ = 3543384960.

The previous prime is 10666564763. The next prime is 10666564819. The reversal of 10666564794 is 49746566601.

It can be written as a sum of positive squares in 2 ways, for example, as 10554480225 + 112084569 = 102735^2 + 10587^2 .

It is a super-2 number, since 2×10666564794² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10666564794.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1005967 + ... + 1016514.

Almost surely, 2^10666564794 is an apocalyptic number.

10666564794 is an abundant number, since it is smaller than the sum of its proper divisors (12523213818).

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

10666564794 is a wasteful number, since it uses less digits than its factorization.

10666564794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022782 (or 2022779 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 10666564794 in words is "ten billion, six hundred sixty-six million, five hundred sixty-four thousand, seven hundred ninety-four".