166104535623 has 16 divisors (see below), whose sum is σ = 239507036160. Its totient is φ = 101790478944.

The previous prime is 166104535579. The next prime is 166104535627. The reversal of 166104535623 is 326535401661.

It is not a de Polignac number, because 166104535623 - 2⁸ = 166104535367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166104535627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8900911 + ... + 8919552.

It is an arithmetic number, because the mean of its divisors is an integer number (14969189760).

Almost surely, 2^166104535623 is an apocalyptic number.

166104535623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

166104535623 is a deficient number, since it is larger than the sum of its proper divisors (73402500537).

166104535623 is a wasteful number, since it uses less digits than its factorization.

166104535623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17820718.

The product of its (nonzero) digits is 388800, while the sum is 42.

The spelling of 166104535623 in words is "one hundred sixty-six billion, one hundred four million, five hundred thirty-five thousand, six hundred twenty-three".