10944191681 has 2 divisors, whose sum is σ = 10944191682. Its totient is φ = 10944191680.

The previous prime is 10944191647. The next prime is 10944191717. The reversal of 10944191681 is 18619144901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10346144656 + 598047025 = 101716^2 + 24455^2 .

It is a cyclic number.

It is not a de Polignac number, because 10944191681 - 2³⁰ = 9870449857 is a prime.

It is a super-2 number, since 2×10944191681² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10944191081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5472095840 + 5472095841.

It is an arithmetic number, because the mean of its divisors is an integer number (5472095841).

Almost surely, 2^10944191681 is an apocalyptic number.

It is an amenable number.

10944191681 is a deficient number, since it is larger than the sum of its proper divisors (1).

10944191681 is an equidigital number, since it uses as much as digits as its factorization.

10944191681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 44.

The spelling of 10944191681 in words is "ten billion, nine hundred forty-four million, one hundred ninety-one thousand, six hundred eighty-one".