22515400399 has 2 divisors, whose sum is σ = 22515400400. Its totient is φ = 22515400398.

The previous prime is 22515400367. The next prime is 22515400489. The reversal of 22515400399 is 99300451522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22515400399 - 2⁵ = 22515400367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22515400199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11257700199 + 11257700200.

It is an arithmetic number, because the mean of its divisors is an integer number (11257700200).

Almost surely, 2^22515400399 is an apocalyptic number.

22515400399 is a deficient number, since it is larger than the sum of its proper divisors (1).

22515400399 is an equidigital number, since it uses as much as digits as its factorization.

22515400399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 22515400399 in words is "twenty-two billion, five hundred fifteen million, four hundred thousand, three hundred ninety-nine".