166289293929 has 16 divisors (see below), whose sum is σ = 241970722560. Its totient is φ = 100741646160.

The previous prime is 166289293867. The next prime is 166289293967. The reversal of 166289293929 is 929392982661.

It is not a de Polignac number, because 166289293929 - 2⁷ = 166289293801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166289293929.

It is not an unprimeable number, because it can be changed into a prime (166289293229) 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, 908547 + ... + 1076120.

It is an arithmetic number, because the mean of its divisors is an integer number (15123170160).

Almost surely, 2^166289293929 is an apocalyptic number.

It is an amenable number.

166289293929 is a deficient number, since it is larger than the sum of its proper divisors (75681428631).

166289293929 is a wasteful number, since it uses less digits than its factorization.

166289293929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987220.

The product of its digits is 45349632, while the sum is 66.

The spelling of 166289293929 in words is "one hundred sixty-six billion, two hundred eighty-nine million, two hundred ninety-three thousand, nine hundred twenty-nine".