11663113897 has 2 divisors, whose sum is σ = 11663113898. Its totient is φ = 11663113896.

The previous prime is 11663113879. The next prime is 11663113921. The reversal of 11663113897 is 79831136611.

Together with previous prime (11663113879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10494773136 + 1168340761 = 102444^2 + 34181^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11663113897 is a prime.

It is not a weakly prime, because it can be changed into another prime (11663113867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5831556948 + 5831556949.

It is an arithmetic number, because the mean of its divisors is an integer number (5831556949).

Almost surely, 2^11663113897 is an apocalyptic number.

It is an amenable number.

11663113897 is a deficient number, since it is larger than the sum of its proper divisors (1).

11663113897 is an equidigital number, since it uses as much as digits as its factorization.

11663113897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 46.

The spelling of 11663113897 in words is "eleven billion, six hundred sixty-three million, one hundred thirteen thousand, eight hundred ninety-seven".