22144043553491 has 2 divisors, whose sum is σ = 22144043553492. Its totient is φ = 22144043553490.

The previous prime is 22144043553319. The next prime is 22144043553497. The reversal of 22144043553491 is 19435534044122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22144043553491 - 2¹⁰ = 22144043552467 is a prime.

It is not a weakly prime, because it can be changed into another prime (22144043553497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11072021776745 + 11072021776746.

It is an arithmetic number, because the mean of its divisors is an integer number (11072021776746).

Almost surely, 2^{22144043553491} is an apocalyptic number.

22144043553491 is a deficient number, since it is larger than the sum of its proper divisors (1).

22144043553491 is an equidigital number, since it uses as much as digits as its factorization.

22144043553491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2073600, while the sum is 47.

The spelling of 22144043553491 in words is "twenty-two trillion, one hundred forty-four billion, forty-three million, five hundred fifty-three thousand, four hundred ninety-one".