11565160511 has 2 divisors, whose sum is σ = 11565160512. Its totient is φ = 11565160510.

The previous prime is 11565160507. The next prime is 11565160549. The reversal of 11565160511 is 11506156511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11565160511 - 2² = 11565160507 is a prime.

It is a super-2 number, since 2×11565160511² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11565160501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5782580255 + 5782580256.

It is an arithmetic number, because the mean of its divisors is an integer number (5782580256).

Almost surely, 2^11565160511 is an apocalyptic number.

11565160511 is a deficient number, since it is larger than the sum of its proper divisors (1).

11565160511 is an equidigital number, since it uses as much as digits as its factorization.

11565160511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 32.

The spelling of 11565160511 in words is "eleven billion, five hundred sixty-five million, one hundred sixty thousand, five hundred eleven".