166492581745 has 32 divisors (see below), whose sum is σ = 229698616320. Its totient is φ = 113483885760.

The previous prime is 166492581737. The next prime is 166492581803. The reversal of 166492581745 is 547185294661.

It is not a de Polignac number, because 166492581745 - 2³ = 166492581737 is a prime.

It is a super-2 number, since 2×166492581745² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166492581745.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27331150 + ... + 27337240.

It is an arithmetic number, because the mean of its divisors is an integer number (7178081760).

Almost surely, 2^166492581745 is an apocalyptic number.

It is an amenable number.

166492581745 is a deficient number, since it is larger than the sum of its proper divisors (63206034575).

166492581745 is a wasteful number, since it uses less digits than its factorization.

166492581745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10645.

The product of its digits is 14515200, while the sum is 58.

The spelling of 166492581745 in words is "one hundred sixty-six billion, four hundred ninety-two million, five hundred eighty-one thousand, seven hundred forty-five".