22682561557 has 2 divisors, whose sum is σ = 22682561558. Its totient is φ = 22682561556.

The previous prime is 22682561509. The next prime is 22682561581. The reversal of 22682561557 is 75516528622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19169510116 + 3513051441 = 138454^2 + 59271^2 .

It is a cyclic number.

It is not a de Polignac number, because 22682561557 - 2¹⁵ = 22682528789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22682561557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22682561507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11341280778 + 11341280779.

It is an arithmetic number, because the mean of its divisors is an integer number (11341280779).

Almost surely, 2^22682561557 is an apocalyptic number.

It is an amenable number.

22682561557 is a deficient number, since it is larger than the sum of its proper divisors (1).

22682561557 is an equidigital number, since it uses as much as digits as its factorization.

22682561557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016000, while the sum is 49.

The spelling of 22682561557 in words is "twenty-two billion, six hundred eighty-two million, five hundred sixty-one thousand, five hundred fifty-seven".