166656011 has 12 divisors (see below), whose sum is σ = 181965600. Its totient is φ = 152430768.

The previous prime is 166655963. The next prime is 166656023. The reversal of 166656011 is 110656661.

It is a de Polignac number, because none of the positive numbers 2^k-166656011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166656041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2510 + ... + 18428.

It is an arithmetic number, because the mean of its divisors is an integer number (15163800).

Almost surely, 2^166656011 is an apocalyptic number.

166656011 is a deficient number, since it is larger than the sum of its proper divisors (15309589).

166656011 is a wasteful number, since it uses less digits than its factorization.

166656011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15986 (or 15967 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 166656011 is about 12909.5317885662. The cubic root of 166656011 is about 550.3094798204.

The spelling of 166656011 in words is "one hundred sixty-six million, six hundred fifty-six thousand, eleven".