22561535506427 has 2 divisors, whose sum is σ = 22561535506428. Its totient is φ = 22561535506426.

The previous prime is 22561535506421. The next prime is 22561535506469. The reversal of 22561535506427 is 72460553516522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22561535506427 - 2³² = 22557240539131 is a prime.

It is not a weakly prime, because it can be changed into another prime (22561535506421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11280767753213 + 11280767753214.

It is an arithmetic number, because the mean of its divisors is an integer number (11280767753214).

Almost surely, 2^{22561535506427} is an apocalyptic number.

22561535506427 is a deficient number, since it is larger than the sum of its proper divisors (1).

22561535506427 is an equidigital number, since it uses as much as digits as its factorization.

22561535506427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120000, while the sum is 53.

The spelling of 22561535506427 in words is "twenty-two trillion, five hundred sixty-one billion, five hundred thirty-five million, five hundred six thousand, four hundred twenty-seven".