11444516641 has 2 divisors, whose sum is σ = 11444516642. Its totient is φ = 11444516640.

The previous prime is 11444516609. The next prime is 11444516653. The reversal of 11444516641 is 14661544411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7448380416 + 3996136225 = 86304^2 + 63215^2 .

It is an emirp because it is prime and its reverse (14661544411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11444516641 - 2⁵ = 11444516609 is a prime.

It is a super-2 number, since 2×11444516641² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11444516641.

It is not a weakly prime, because it can be changed into another prime (11444516441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5722258320 + 5722258321.

It is an arithmetic number, because the mean of its divisors is an integer number (5722258321).

Almost surely, 2^11444516641 is an apocalyptic number.

It is an amenable number.

11444516641 is a deficient number, since it is larger than the sum of its proper divisors (1).

11444516641 is an equidigital number, since it uses as much as digits as its factorization.

11444516641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 37.

The spelling of 11444516641 in words is "eleven billion, four hundred forty-four million, five hundred sixteen thousand, six hundred forty-one".