22715415449 has 2 divisors, whose sum is σ = 22715415450. Its totient is φ = 22715415448.

The previous prime is 22715415421. The next prime is 22715415517. The reversal of 22715415449 is 94451451722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21443209225 + 1272206224 = 146435^2 + 35668^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22715415449 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22715415409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11357707724 + 11357707725.

It is an arithmetic number, because the mean of its divisors is an integer number (11357707725).

Almost surely, 2^22715415449 is an apocalyptic number.

It is an amenable number.

22715415449 is a deficient number, since it is larger than the sum of its proper divisors (1).

22715415449 is an equidigital number, since it uses as much as digits as its factorization.

22715415449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 44.

The spelling of 22715415449 in words is "twenty-two billion, seven hundred fifteen million, four hundred fifteen thousand, four hundred forty-nine".