22357889124581 has 2 divisors, whose sum is σ = 22357889124582. Its totient is φ = 22357889124580.

The previous prime is 22357889124511. The next prime is 22357889124713. The reversal of 22357889124581 is 18542198875322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19586776233025 + 2771112891556 = 4425695^2 + 1664666^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22357889124581 is a prime.

It is a super-2 number, since 2×22357889124581² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22357889124511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11178944562290 + 11178944562291.

It is an arithmetic number, because the mean of its divisors is an integer number (11178944562291).

Almost surely, 2^{22357889124581} is an apocalyptic number.

It is an amenable number.

22357889124581 is a deficient number, since it is larger than the sum of its proper divisors (1).

22357889124581 is an equidigital number, since it uses as much as digits as its factorization.

22357889124581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77414400, while the sum is 65.

The spelling of 22357889124581 in words is "twenty-two trillion, three hundred fifty-seven billion, eight hundred eighty-nine million, one hundred twenty-four thousand, five hundred eighty-one".