656656501166 has 4 divisors (see below), whose sum is σ = 984984751752. Its totient is φ = 328328250582.

The previous prime is 656656501141. The next prime is 656656501247. The reversal of 656656501166 is 661105656656.

It is a happy number.

656656501166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164164125290 + ... + 164164125293.

It is an arithmetic number, because the mean of its divisors is an integer number (246246187938).

Almost surely, 2^656656501166 is an apocalyptic number.

656656501166 is a deficient number, since it is larger than the sum of its proper divisors (328328250586).

656656501166 is a wasteful number, since it uses less digits than its factorization.

656656501166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328328250585.

The product of its (nonzero) digits is 5832000, while the sum is 53.

The spelling of 656656501166 in words is "six hundred fifty-six billion, six hundred fifty-six million, five hundred one thousand, one hundred sixty-six".