166125405053 has 16 divisors (see below), whose sum is σ = 169409180160. Its totient is φ = 162880426800.

The previous prime is 166125405037. The next prime is 166125405073. The reversal of 166125405053 is 350504521661.

It is a cyclic number.

It is not a de Polignac number, because 166125405053 - 2⁴ = 166125405037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166125404998 and 166125405016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166125405073) 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, 5296808 + ... + 5328078.

It is an arithmetic number, because the mean of its divisors is an integer number (10588073760).

Almost surely, 2^166125405053 is an apocalyptic number.

It is an amenable number.

166125405053 is a deficient number, since it is larger than the sum of its proper divisors (3283775107).

166125405053 is a wasteful number, since it uses less digits than its factorization.

166125405053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31888.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 166125405053 in words is "one hundred sixty-six billion, one hundred twenty-five million, four hundred five thousand, fifty-three".