22561718407 has 2 divisors, whose sum is σ = 22561718408. Its totient is φ = 22561718406.

The previous prime is 22561718393. The next prime is 22561718429. The reversal of 22561718407 is 70481716522.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22561718407 is a prime.

It is a super-2 number, since 2×22561718407² (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 (22561718447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11280859203 + 11280859204.

It is an arithmetic number, because the mean of its divisors is an integer number (11280859204).

Almost surely, 2^22561718407 is an apocalyptic number.

22561718407 is a deficient number, since it is larger than the sum of its proper divisors (1).

22561718407 is an equidigital number, since it uses as much as digits as its factorization.

22561718407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160, while the sum is 43.

The spelling of 22561718407 in words is "twenty-two billion, five hundred sixty-one million, seven hundred eighteen thousand, four hundred seven".