22661155116623 has 2 divisors, whose sum is σ = 22661155116624. Its totient is φ = 22661155116622.

The previous prime is 22661155116571. The next prime is 22661155116629. The reversal of 22661155116623 is 32661155116622.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22661155116623 - 2⁸ = 22661155116367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22661155116629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11330577558311 + 11330577558312.

It is an arithmetic number, because the mean of its divisors is an integer number (11330577558312).

Almost surely, 2^{22661155116623} is an apocalyptic number.

22661155116623 is a deficient number, since it is larger than the sum of its proper divisors (1).

22661155116623 is an equidigital number, since it uses as much as digits as its factorization.

22661155116623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777600, while the sum is 47.

Subtracting 22661155116623 from its reverse (32661155116622), we obtain a palindrome (9999999999999).

The spelling of 22661155116623 in words is "twenty-two trillion, six hundred sixty-one billion, one hundred fifty-five million, one hundred sixteen thousand, six hundred twenty-three".