22509322887 has 4 divisors (see below), whose sum is σ = 30012430520. Its totient is φ = 15006215256.

The previous prime is 22509322867. The next prime is 22509322903. The reversal of 22509322887 is 78822390522.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 22509322887 - 2¹⁵ = 22509290119 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 (22509322867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3751553812 + ... + 3751553817.

It is an arithmetic number, because the mean of its divisors is an integer number (7503107630).

Almost surely, 2^22509322887 is an apocalyptic number.

22509322887 is a deficient number, since it is larger than the sum of its proper divisors (7503107633).

22509322887 is an equidigital number, since it uses as much as digits as its factorization.

22509322887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7503107632.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 22509322887 in words is "twenty-two billion, five hundred nine million, three hundred twenty-two thousand, eight hundred eighty-seven".