166031016402 has 16 divisors (see below), whose sum is σ = 332261729280. Its totient is φ = 55310389392.

The previous prime is 166031016397. The next prime is 166031016433. The reversal of 166031016402 is 204610130661.

It is a self number, because there is not a number n which added to its sum of digits gives 166031016402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8309877 + ... + 8329832.

It is an arithmetic number, because the mean of its divisors is an integer number (20766358080).

Almost surely, 2^166031016402 is an apocalyptic number.

166031016402 is an abundant number, since it is smaller than the sum of its proper divisors (166230712878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166031016402 is a wasteful number, since it uses less digits than its factorization.

166031016402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16641377.

The product of its (nonzero) digits is 5184, while the sum is 30.

The spelling of 166031016402 in words is "one hundred sixty-six billion, thirty-one million, sixteen thousand, four hundred two".