22461438889 has 4 divisors (see below), whose sum is σ = 22462064640. Its totient is φ = 22460813140.

The previous prime is 22461438871. The next prime is 22461438917. The reversal of 22461438889 is 98883416422.

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 a de Polignac number, because none of the positive numbers 2^k-22461438889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22461438289) 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, 255529 + ... + 331990.

It is an arithmetic number, because the mean of its divisors is an integer number (5615516160).

Almost surely, 2^22461438889 is an apocalyptic number.

It is an amenable number.

22461438889 is a deficient number, since it is larger than the sum of its proper divisors (625751).

22461438889 is an equidigital number, since it uses as much as digits as its factorization.

22461438889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625750.

The product of its digits is 5308416, while the sum is 55.

The spelling of 22461438889 in words is "twenty-two billion, four hundred sixty-one million, four hundred thirty-eight thousand, eight hundred eighty-nine".