22640910287 has 2 divisors, whose sum is σ = 22640910288. Its totient is φ = 22640910286.

The previous prime is 22640910277. The next prime is 22640910379. The reversal of 22640910287 is 78201904622.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22640910287 - 2⁸ = 22640910031 is a prime.

It is a super-2 number, since 2×22640910287² (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 (22640910217) 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, 11320455143 + 11320455144.

It is an arithmetic number, because the mean of its divisors is an integer number (11320455144).

Almost surely, 2^22640910287 is an apocalyptic number.

22640910287 is a deficient number, since it is larger than the sum of its proper divisors (1).

22640910287 is an equidigital number, since it uses as much as digits as its factorization.

22640910287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 22640910287 in words is "twenty-two billion, six hundred forty million, nine hundred ten thousand, two hundred eighty-seven".