44081089261681 has 2 divisors, whose sum is σ = 44081089261682. Its totient is φ = 44081089261680.

The previous prime is 44081089261603. The next prime is 44081089261687. The reversal of 44081089261681 is 18616298018044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44080038918400 + 1050343281 = 6639280^2 + 32409^2 .

It is a cyclic number.

It is not a de Polignac number, because 44081089261681 - 2³⁷ = 43943650308209 is a prime.

It is a super-2 number, since 2×44081089261681² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (44081089261687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22040544630840 + 22040544630841.

It is an arithmetic number, because the mean of its divisors is an integer number (22040544630841).

Almost surely, 2^{44081089261681} is an apocalyptic number.

It is an amenable number.

44081089261681 is a deficient number, since it is larger than the sum of its proper divisors (1).

44081089261681 is an equidigital number, since it uses as much as digits as its factorization.

44081089261681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5308416, while the sum is 58.

The spelling of 44081089261681 in words is "forty-four trillion, eighty-one billion, eighty-nine million, two hundred sixty-one thousand, six hundred eighty-one".