22504718986993 has 2 divisors, whose sum is σ = 22504718986994. Its totient is φ = 22504718986992.

The previous prime is 22504718986901. The next prime is 22504718987017. The reversal of 22504718986993 is 39968981740522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14094678386944 + 8410040600049 = 3754288^2 + 2900007^2 .

It is a cyclic number.

It is not a de Polignac number, because 22504718986993 - 2²⁵ = 22504685432561 is a prime.

It is not a weakly prime, because it can be changed into another prime (22504718986193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11252359493496 + 11252359493497.

It is an arithmetic number, because the mean of its divisors is an integer number (11252359493497).

It is a 1-persistent number, because it is pandigital, but 2⋅22504718986993 = 45009437973986 is not.

Almost surely, 2^{22504718986993} is an apocalyptic number.

It is an amenable number.

22504718986993 is a deficient number, since it is larger than the sum of its proper divisors (1).

22504718986993 is an equidigital number, since it uses as much as digits as its factorization.

22504718986993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 470292480, while the sum is 73.

The spelling of 22504718986993 in words is "twenty-two trillion, five hundred four billion, seven hundred eighteen million, nine hundred eighty-six thousand, nine hundred ninety-three".