165166516215446 has 32 divisors (see below), whose sum is σ = 263433848680800. Its totient is φ = 77396972806656.

The previous prime is 165166516215439. The next prime is 165166516215527. The reversal of 165166516215446 is 644512615661561.

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, 796976 + ... + 18192531.

It is an arithmetic number, because the mean of its divisors is an integer number (8232307771275).

Almost surely, 2^{165166516215446} is an apocalyptic number.

165166516215446 is a deficient number, since it is larger than the sum of its proper divisors (98267332465354).

165166516215446 is a wasteful number, since it uses less digits than its factorization.

165166516215446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18990608.

The product of its digits is 31104000, while the sum is 59.

The spelling of 165166516215446 in words is "one hundred sixty-five trillion, one hundred sixty-six billion, five hundred sixteen million, two hundred fifteen thousand, four hundred forty-six".