42166532265 has 64 divisors (see below), whose sum is σ = 79327890432. Its totient is φ = 18855878400.

The previous prime is 42166532263. The next prime is 42166532269. The reversal of 42166532265 is 56223566124.

It is not a de Polignac number, because 42166532265 - 2¹ = 42166532263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42166532263) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2761582 + ... + 2776808.

It is an arithmetic number, because the mean of its divisors is an integer number (1239498288).

Almost surely, 2^42166532265 is an apocalyptic number.

It is an amenable number.

42166532265 is a deficient number, since it is larger than the sum of its proper divisors (37161358167).

42166532265 is a wasteful number, since it uses less digits than its factorization.

42166532265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16550.

The product of its digits is 518400, while the sum is 42.

The spelling of 42166532265 in words is "forty-two billion, one hundred sixty-six million, five hundred thirty-two thousand, two hundred sixty-five".