166287502875 has 32 divisors (see below), whose sum is σ = 297987213888. Its totient is φ = 81864614400.

The previous prime is 166287502859. The next prime is 166287502879. The reversal of 166287502875 is 578205782661.

It is not a de Polignac number, because 166287502875 - 2⁴ = 166287502859 is a prime.

It is a super-2 number, since 2×166287502875² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166287502879) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17050254 + ... + 17060003.

It is an arithmetic number, because the mean of its divisors is an integer number (9312100434).

Almost surely, 2^166287502875 is an apocalyptic number.

166287502875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

166287502875 is a deficient number, since it is larger than the sum of its proper divisors (131699711013).

166287502875 is a wasteful number, since it uses less digits than its factorization.

166287502875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34110288 (or 34110278 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 57.

The spelling of 166287502875 in words is "one hundred sixty-six billion, two hundred eighty-seven million, five hundred two thousand, eight hundred seventy-five".