11667826666 has 32 divisors (see below), whose sum is σ = 18175726080. Its totient is φ = 5614615296.

The previous prime is 11667826633. The next prime is 11667826697. The reversal of 11667826666 is 66662876611.

It is a super-2 number, since 2×11667826666² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1175175 + ... + 1185061.

It is an arithmetic number, because the mean of its divisors is an integer number (567991440).

Almost surely, 2^11667826666 is an apocalyptic number.

11667826666 is a deficient number, since it is larger than the sum of its proper divisors (6507899414).

11667826666 is a wasteful number, since it uses less digits than its factorization.

11667826666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10158.

The product of its digits is 5225472, while the sum is 55.

The spelling of 11667826666 in words is "eleven billion, six hundred sixty-seven million, eight hundred twenty-six thousand, six hundred sixty-six".