44409975041681 has 2 divisors, whose sum is σ = 44409975041682. Its totient is φ = 44409975041680.

The previous prime is 44409975041659. The next prime is 44409975041701. The reversal of 44409975041681 is 18614057990444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25731017130625 + 18678957911056 = 5072575^2 + 4321916^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44409975041681 is a prime.

It is a super-2 number, since 2×44409975041681² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (44409975041611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22204987520840 + 22204987520841.

It is an arithmetic number, because the mean of its divisors is an integer number (22204987520841).

Almost surely, 2^{44409975041681} is an apocalyptic number.

It is an amenable number.

44409975041681 is a deficient number, since it is larger than the sum of its proper divisors (1).

44409975041681 is an equidigital number, since it uses as much as digits as its factorization.

44409975041681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34836480, while the sum is 62.

The spelling of 44409975041681 in words is "forty-four trillion, four hundred nine billion, nine hundred seventy-five million, forty-one thousand, six hundred eighty-one".