22534727581 has 2 divisors, whose sum is σ = 22534727582. Its totient is φ = 22534727580.

The previous prime is 22534727573. The next prime is 22534727653. The reversal of 22534727581 is 18572743522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16426523556 + 6108204025 = 128166^2 + 78155^2 .

It is a cyclic number.

It is not a de Polignac number, because 22534727581 - 2³ = 22534727573 is a prime.

It is a super-2 number, since 2×22534727581² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22534727531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11267363790 + 11267363791.

It is an arithmetic number, because the mean of its divisors is an integer number (11267363791).

Almost surely, 2^22534727581 is an apocalyptic number.

It is an amenable number.

22534727581 is a deficient number, since it is larger than the sum of its proper divisors (1).

22534727581 is an equidigital number, since it uses as much as digits as its factorization.

22534727581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 940800, while the sum is 46.

The spelling of 22534727581 in words is "twenty-two billion, five hundred thirty-four million, seven hundred twenty-seven thousand, five hundred eighty-one".