22534512989 has 4 divisors (see below), whose sum is σ = 22538058624. Its totient is φ = 22530967356.

The previous prime is 22534512977. The next prime is 22534513021. The reversal of 22534512989 is 98921543522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98921543522 = 2 ⋅49460771761.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22534512989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22534502989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1763267 + ... + 1776000.

It is an arithmetic number, because the mean of its divisors is an integer number (5634514656).

Almost surely, 2^22534512989 is an apocalyptic number.

It is an amenable number.

22534512989 is a deficient number, since it is larger than the sum of its proper divisors (3545635).

22534512989 is an equidigital number, since it uses as much as digits as its factorization.

22534512989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3545634.

The product of its digits is 1555200, while the sum is 50.

The spelling of 22534512989 in words is "twenty-two billion, five hundred thirty-four million, five hundred twelve thousand, nine hundred eighty-nine".