22615540489 has 2 divisors, whose sum is σ = 22615540490. Its totient is φ = 22615540488.

The previous prime is 22615540459. The next prime is 22615540513. The reversal of 22615540489 is 98404551622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20186726400 + 2428814089 = 142080^2 + 49283^2 .

It is a cyclic number.

It is not a de Polignac number, because 22615540489 - 2⁷ = 22615540361 is a prime.

It is a super-2 number, since 2×22615540489² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22615540459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11307770244 + 11307770245.

It is an arithmetic number, because the mean of its divisors is an integer number (11307770245).

Almost surely, 2^22615540489 is an apocalyptic number.

It is an amenable number.

22615540489 is a deficient number, since it is larger than the sum of its proper divisors (1).

22615540489 is an equidigital number, since it uses as much as digits as its factorization.

22615540489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 22615540489 in words is "twenty-two billion, six hundred fifteen million, five hundred forty thousand, four hundred eighty-nine".