11655135571 has 2 divisors, whose sum is σ = 11655135572. Its totient is φ = 11655135570.

The previous prime is 11655135563. The next prime is 11655135581. The reversal of 11655135571 is 17553155611.

11655135571 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11655135571 - 2³ = 11655135563 is a prime.

It is not a weakly prime, because it can be changed into another prime (11655135551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5827567785 + 5827567786.

It is an arithmetic number, because the mean of its divisors is an integer number (5827567786).

Almost surely, 2^11655135571 is an apocalyptic number.

11655135571 is a deficient number, since it is larger than the sum of its proper divisors (1).

11655135571 is an equidigital number, since it uses as much as digits as its factorization.

11655135571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78750, while the sum is 40.

The spelling of 11655135571 in words is "eleven billion, six hundred fifty-five million, one hundred thirty-five thousand, five hundred seventy-one".