22487968309 has 4 divisors (see below), whose sum is σ = 22491973216. Its totient is φ = 22483963404.

The previous prime is 22487968303. The next prime is 22487968313. The reversal of 22487968309 is 90386978422.

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.

It is a cyclic number.

It is not a de Polignac number, because 22487968309 - 2⁹ = 22487967797 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 (22487968303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1994019 + ... + 2005264.

It is an arithmetic number, because the mean of its divisors is an integer number (5622993304).

Almost surely, 2^22487968309 is an apocalyptic number.

It is an amenable number.

22487968309 is a deficient number, since it is larger than the sum of its proper divisors (4004907).

22487968309 is an equidigital number, since it uses as much as digits as its factorization.

22487968309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4004906.

The product of its (nonzero) digits is 10450944, while the sum is 58.

The spelling of 22487968309 in words is "twenty-two billion, four hundred eighty-seven million, nine hundred sixty-eight thousand, three hundred nine".