22144244155687 has 2 divisors, whose sum is σ = 22144244155688. Its totient is φ = 22144244155686.

The previous prime is 22144244155639. The next prime is 22144244155697. The reversal of 22144244155687 is 78655144244122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22144244155687 - 2²³ = 22144235767079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22144244155697) 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, 11072122077843 + 11072122077844.

It is an arithmetic number, because the mean of its divisors is an integer number (11072122077844).

Almost surely, 2^{22144244155687} is an apocalyptic number.

22144244155687 is a deficient number, since it is larger than the sum of its proper divisors (1).

22144244155687 is an equidigital number, since it uses as much as digits as its factorization.

22144244155687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17203200, while the sum is 55.

The spelling of 22144244155687 in words is "twenty-two trillion, one hundred forty-four billion, two hundred forty-four million, one hundred fifty-five thousand, six hundred eighty-seven".