22511551554497 has 2 divisors, whose sum is σ = 22511551554498. Its totient is φ = 22511551554496.

The previous prime is 22511551554451. The next prime is 22511551554509. The reversal of 22511551554497 is 79445515511522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20851360536241 + 1660191018256 = 4566329^2 + 1288484^2 .

It is a cyclic number.

It is not a de Polignac number, because 22511551554497 - 2²⁶ = 22511484445633 is a prime.

It is not a weakly prime, because it can be changed into another prime (22511551554197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11255775777248 + 11255775777249.

It is an arithmetic number, because the mean of its divisors is an integer number (11255775777249).

Almost surely, 2^{22511551554497} is an apocalyptic number.

It is an amenable number.

22511551554497 is a deficient number, since it is larger than the sum of its proper divisors (1).

22511551554497 is an equidigital number, since it uses as much as digits as its factorization.

22511551554497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600000, while the sum is 56.

The spelling of 22511551554497 in words is "twenty-two trillion, five hundred eleven billion, five hundred fifty-one million, five hundred fifty-four thousand, four hundred ninety-seven".