11587798657 has 2 divisors, whose sum is σ = 11587798658. Its totient is φ = 11587798656.

The previous prime is 11587798633. The next prime is 11587798669. The reversal of 11587798657 is 75689778511.

11587798657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8815144321 + 2772654336 = 93889^2 + 52656^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11587798657 is a prime.

It is not a weakly prime, because it can be changed into another prime (11587790657) 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, 5793899328 + 5793899329.

It is an arithmetic number, because the mean of its divisors is an integer number (5793899329).

Almost surely, 2^11587798657 is an apocalyptic number.

It is an amenable number.

11587798657 is a deficient number, since it is larger than the sum of its proper divisors (1).

11587798657 is an equidigital number, since it uses as much as digits as its factorization.

11587798657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29635200, while the sum is 64.

The spelling of 11587798657 in words is "eleven billion, five hundred eighty-seven million, seven hundred ninety-eight thousand, six hundred fifty-seven".