22004462509 has 2 divisors, whose sum is σ = 22004462510. Its totient is φ = 22004462508.

The previous prime is 22004462479. The next prime is 22004462551. The reversal of 22004462509 is 90526440022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21588424900 + 416037609 = 146930^2 + 20397^2 .

It is a cyclic number.

It is not a de Polignac number, because 22004462509 - 2²⁹ = 21467591597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22004462009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11002231254 + 11002231255.

It is an arithmetic number, because the mean of its divisors is an integer number (11002231255).

Almost surely, 2^22004462509 is an apocalyptic number.

It is an amenable number.

22004462509 is a deficient number, since it is larger than the sum of its proper divisors (1).

22004462509 is an equidigital number, since it uses as much as digits as its factorization.

22004462509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 22004462509 in words is "twenty-two billion, four million, four hundred sixty-two thousand, five hundred nine".