11563155787 has 2 divisors, whose sum is σ = 11563155788. Its totient is φ = 11563155786.

The previous prime is 11563155781. The next prime is 11563155827. The reversal of 11563155787 is 78755136511.

11563155787 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 a de Polignac number, because none of the positive numbers 2^k-11563155787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11563155787.

It is not a weakly prime, because it can be changed into another prime (11563155781) 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, 5781577893 + 5781577894.

It is an arithmetic number, because the mean of its divisors is an integer number (5781577894).

Almost surely, 2^11563155787 is an apocalyptic number.

11563155787 is a deficient number, since it is larger than the sum of its proper divisors (1).

11563155787 is an equidigital number, since it uses as much as digits as its factorization.

11563155787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 882000, while the sum is 49.

The spelling of 11563155787 in words is "eleven billion, five hundred sixty-three million, one hundred fifty-five thousand, seven hundred eighty-seven".