166872486765 has 16 divisors (see below), whose sum is σ = 270756487296. Its totient is φ = 87745156800.

The previous prime is 166872486751. The next prime is 166872486791. The reversal of 166872486765 is 567684278661.

It is not a de Polignac number, because 166872486765 - 2¹⁶ = 166872421229 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 166872486696 and 166872486705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78342826 + ... + 78344955.

It is an arithmetic number, because the mean of its divisors is an integer number (16922280456).

Almost surely, 2^166872486765 is an apocalyptic number.

166872486765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166872486765 is a deficient number, since it is larger than the sum of its proper divisors (103884000531).

166872486765 is a wasteful number, since it uses less digits than its factorization.

166872486765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156687860.

The product of its digits is 162570240, while the sum is 66.

The spelling of 166872486765 in words is "one hundred sixty-six billion, eight hundred seventy-two million, four hundred eighty-six thousand, seven hundred sixty-five".