166625015023 has 16 divisors (see below), whose sum is σ = 170415083520. Its totient is φ = 162868199200.

The previous prime is 166625015021. The next prime is 166625015059. The reversal of 166625015023 is 320510526661.

It is a cyclic number.

It is not a de Polignac number, because 166625015023 - 2¹ = 166625015021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166625015021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24532758 + ... + 24539548.

It is an arithmetic number, because the mean of its divisors is an integer number (10650942720).

Almost surely, 2^166625015023 is an apocalyptic number.

166625015023 is a deficient number, since it is larger than the sum of its proper divisors (3790068497).

166625015023 is a wasteful number, since it uses less digits than its factorization.

166625015023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9158.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 166625015023 in words is "one hundred sixty-six billion, six hundred twenty-five million, fifteen thousand, twenty-three".