11560555571 has 2 divisors, whose sum is σ = 11560555572. Its totient is φ = 11560555570.

The previous prime is 11560555541. The next prime is 11560555597. The reversal of 11560555571 is 17555506511.

It is a strong prime.

It is an emirp because it is prime and its reverse (17555506511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11560555571 - 2⁶ = 11560555507 is a prime.

It is a super-2 number, since 2×11560555571² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11560555541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5780277785 + 5780277786.

It is an arithmetic number, because the mean of its divisors is an integer number (5780277786).

Almost surely, 2^11560555571 is an apocalyptic number.

11560555571 is a deficient number, since it is larger than the sum of its proper divisors (1).

11560555571 is an equidigital number, since it uses as much as digits as its factorization.

11560555571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 131250, while the sum is 41.

The spelling of 11560555571 in words is "eleven billion, five hundred sixty million, five hundred fifty-five thousand, five hundred seventy-one".