166550562117 has 12 divisors (see below), whose sum is σ = 240974666400. Its totient is φ = 110848339368.

The previous prime is 166550562103. The next prime is 166550562133. The reversal of 166550562117 is 711265055661.

It is a happy number.

166550562117 is a `hidden beast` number, since 1 + 6 + 6 + 5 + 5 + 0 + 5 + 621 + 17 = 666.

It is not a de Polignac number, because 166550562117 - 2⁶ = 166550562053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166550560117) 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, 15441703 + ... + 15452484.

It is an arithmetic number, because the mean of its divisors is an integer number (20081222200).

Almost surely, 2^166550562117 is an apocalyptic number.

It is an amenable number.

166550562117 is a deficient number, since it is larger than the sum of its proper divisors (74424104283).

166550562117 is a wasteful number, since it uses less digits than its factorization.

166550562117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30894792 (or 30894789 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The spelling of 166550562117 in words is "one hundred sixty-six billion, five hundred fifty million, five hundred sixty-two thousand, one hundred seventeen".