166218541262 has 16 divisors (see below), whose sum is σ = 249707026800. Its totient is φ = 82982954880.

The previous prime is 166218541261. The next prime is 166218541297. The reversal of 166218541262 is 262145812661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166218541261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3972812 + ... + 4014432.

It is an arithmetic number, because the mean of its divisors is an integer number (15606689175).

Almost surely, 2^166218541262 is an apocalyptic number.

166218541262 is a deficient number, since it is larger than the sum of its proper divisors (83488485538).

166218541262 is a wasteful number, since it uses less digits than its factorization.

166218541262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44611.

The product of its digits is 276480, while the sum is 44.

The spelling of 166218541262 in words is "one hundred sixty-six billion, two hundred eighteen million, five hundred forty-one thousand, two hundred sixty-two".