22620326381 has 2 divisors, whose sum is σ = 22620326382. Its totient is φ = 22620326380.

The previous prime is 22620326371. The next prime is 22620326423. The reversal of 22620326381 is 18362302622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19674550756 + 2945775625 = 140266^2 + 54275^2 .

It is a cyclic number.

It is not a de Polignac number, because 22620326381 - 2²⁶ = 22553217517 is a prime.

It is a super-2 number, since 2×22620326381² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22620326371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11310163190 + 11310163191.

It is an arithmetic number, because the mean of its divisors is an integer number (11310163191).

Almost surely, 2^22620326381 is an apocalyptic number.

It is an amenable number.

22620326381 is a deficient number, since it is larger than the sum of its proper divisors (1).

22620326381 is an equidigital number, since it uses as much as digits as its factorization.

22620326381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 22620326381 in words is "twenty-two billion, six hundred twenty million, three hundred twenty-six thousand, three hundred eighty-one".