22540322407 has 2 divisors, whose sum is σ = 22540322408. Its totient is φ = 22540322406.

The previous prime is 22540322393. The next prime is 22540322429. The reversal of 22540322407 is 70422304522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22540322407 - 2²³ = 22531933799 is a prime.

It is a super-2 number, since 2×22540322407² (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 (22540322447) 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, 11270161203 + 11270161204.

It is an arithmetic number, because the mean of its divisors is an integer number (11270161204).

Almost surely, 2^22540322407 is an apocalyptic number.

22540322407 is a deficient number, since it is larger than the sum of its proper divisors (1).

22540322407 is an equidigital number, since it uses as much as digits as its factorization.

22540322407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 31.

Adding to 22540322407 its reverse (70422304522), we get a palindrome (92962626929).

The spelling of 22540322407 in words is "twenty-two billion, five hundred forty million, three hundred twenty-two thousand, four hundred seven".