22605717538543 has 2 divisors, whose sum is σ = 22605717538544. Its totient is φ = 22605717538542.

The previous prime is 22605717538531. The next prime is 22605717538571. The reversal of 22605717538543 is 34583571750622.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22605717538543 - 2⁹ = 22605717538031 is a prime.

It is a super-2 number, since 2×22605717538543² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22605717538513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11302858769271 + 11302858769272.

It is an arithmetic number, because the mean of its divisors is an integer number (11302858769272).

Almost surely, 2^{22605717538543} is an apocalyptic number.

22605717538543 is a deficient number, since it is larger than the sum of its proper divisors (1).

22605717538543 is an equidigital number, since it uses as much as digits as its factorization.

22605717538543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336000, while the sum is 58.

The spelling of 22605717538543 in words is "twenty-two trillion, six hundred five billion, seven hundred seventeen million, five hundred thirty-eight thousand, five hundred forty-three".