166134775042 has 16 divisors (see below), whose sum is σ = 264060928152. Its totient is φ = 78121866240.

The previous prime is 166134774979. The next prime is 166134775049. The reversal of 166134775042 is 240577431661.

166134775042 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 142612724881 + 23522050161 = 377641^2 + 153369^2 .

It is a super-2 number, since 2×166134775042² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166134774983 and 166134775001.

It is not an unprimeable number, because it can be changed into a prime (166134775049) 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, 1804563 + ... + 1894390.

Almost surely, 2^166134775042 is an apocalyptic number.

166134775042 is a deficient number, since it is larger than the sum of its proper divisors (97926153110).

166134775042 is a wasteful number, since it uses less digits than its factorization.

166134775042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3700293.

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 166134775042 in words is "one hundred sixty-six billion, one hundred thirty-four million, seven hundred seventy-five thousand, forty-two".