22999587145961 has 2 divisors, whose sum is σ = 22999587145962. Its totient is φ = 22999587145960.

The previous prime is 22999587145949. The next prime is 22999587145967. The reversal of 22999587145961 is 16954178599922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13220176033936 + 9779411112025 = 3635956^2 + 3127205^2 .

It is a cyclic number.

It is not a de Polignac number, because 22999587145961 - 2³⁰ = 22998513404137 is a prime.

It is a super-2 number, since 2×22999587145961² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22999587145967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11499793572980 + 11499793572981.

It is an arithmetic number, because the mean of its divisors is an integer number (11499793572981).

Almost surely, 2^{22999587145961} is an apocalyptic number.

It is an amenable number.

22999587145961 is a deficient number, since it is larger than the sum of its proper divisors (1).

22999587145961 is an equidigital number, since it uses as much as digits as its factorization.

22999587145961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 881798400, while the sum is 77.

The spelling of 22999587145961 in words is "twenty-two trillion, nine hundred ninety-nine billion, five hundred eighty-seven million, one hundred forty-five thousand, nine hundred sixty-one".