11044874564681 has 2 divisors, whose sum is σ = 11044874564682. Its totient is φ = 11044874564680.

The previous prime is 11044874564641. The next prime is 11044874564699. The reversal of 11044874564681 is 18646547844011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10250786839225 + 794087725456 = 3201685^2 + 891116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11044874564681 is a prime.

It is a super-2 number, since 2×11044874564681² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11044874564681.

It is not a weakly prime, because it can be changed into another prime (11044874564641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5522437282340 + 5522437282341.

It is an arithmetic number, because the mean of its divisors is an integer number (5522437282341).

Almost surely, 2^{11044874564681} is an apocalyptic number.

It is an amenable number.

11044874564681 is a deficient number, since it is larger than the sum of its proper divisors (1).

11044874564681 is an equidigital number, since it uses as much as digits as its factorization.

11044874564681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20643840, while the sum is 59.

The spelling of 11044874564681 in words is "eleven trillion, forty-four billion, eight hundred seventy-four million, five hundred sixty-four thousand, six hundred eighty-one".