11311365641 has 2 divisors, whose sum is σ = 11311365642. Its totient is φ = 11311365640.

The previous prime is 11311365631. The next prime is 11311365671. The reversal of 11311365641 is 14656311311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9487734025 + 1823631616 = 97405^2 + 42704^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11311365641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11311365598 and 11311365607.

It is not a weakly prime, because it can be changed into another prime (11311365631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655682820 + 5655682821.

It is an arithmetic number, because the mean of its divisors is an integer number (5655682821).

Almost surely, 2^11311365641 is an apocalyptic number.

It is an amenable number.

11311365641 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311365641 is an equidigital number, since it uses as much as digits as its factorization.

11311365641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 32.

Adding to 11311365641 its reverse (14656311311), we get a palindrome (25967676952).

The spelling of 11311365641 in words is "eleven billion, three hundred eleven million, three hundred sixty-five thousand, six hundred forty-one".