10001660556 has 24 divisors (see below), whose sum is σ = 23340506224. Its totient is φ = 3333415680.

The previous prime is 10001660549. The next prime is 10001660567. The reversal of 10001660556 is 65506610001.

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, 35616 + ... + 145848.

Almost surely, 2^10001660556 is an apocalyptic number.

It is an amenable number.

10001660556 is an abundant number, since it is smaller than the sum of its proper divisors (13338845668).

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

10001660556 is a wasteful number, since it uses less digits than its factorization.

10001660556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117801 (or 117799 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The spelling of 10001660556 in words is "ten billion, one million, six hundred sixty thousand, five hundred fifty-six".