22532717665 has 4 divisors (see below), whose sum is σ = 27039261204. Its totient is φ = 18026174128.

The previous prime is 22532717621. The next prime is 22532717681. The reversal of 22532717665 is 56671723522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56671723522 = 2 ⋅28335861761.

It can be written as a sum of positive squares in 2 ways, for example, as 15677043264 + 6855674401 = 125208^2 + 82799^2 .

It is a cyclic number.

It is not a de Polignac number, because 22532717665 - 2¹¹ = 22532715617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2253271762 + ... + 2253271771.

It is an arithmetic number, because the mean of its divisors is an integer number (6759815301).

Almost surely, 2^22532717665 is an apocalyptic number.

It is an amenable number.

22532717665 is a deficient number, since it is larger than the sum of its proper divisors (4506543539).

22532717665 is an equidigital number, since it uses as much as digits as its factorization.

22532717665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4506543538.

The product of its digits is 1058400, while the sum is 46.

The spelling of 22532717665 in words is "twenty-two billion, five hundred thirty-two million, seven hundred seventeen thousand, six hundred sixty-five".