22515400489 has 2 divisors, whose sum is σ = 22515400490. Its totient is φ = 22515400488.

The previous prime is 22515400399. The next prime is 22515400519. The reversal of 22515400489 is 98400451522.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21886243600 + 629156889 = 147940^2 + 25083^2 .

It is a cyclic number.

It is not a de Polignac number, because 22515400489 - 2¹⁷ = 22515269417 is a prime.

It is a super-2 number, since 2×22515400489² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22515430489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11257700244 + 11257700245.

It is an arithmetic number, because the mean of its divisors is an integer number (11257700245).

Almost surely, 2^22515400489 is an apocalyptic number.

It is an amenable number.

22515400489 is a deficient number, since it is larger than the sum of its proper divisors (1).

22515400489 is an equidigital number, since it uses as much as digits as its factorization.

22515400489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 22515400489 in words is "twenty-two billion, five hundred fifteen million, four hundred thousand, four hundred eighty-nine".