11663361637 has 2 divisors, whose sum is σ = 11663361638. Its totient is φ = 11663361636.

The previous prime is 11663361587. The next prime is 11663361643. The reversal of 11663361637 is 73616336611.

11663361637 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., 9394649476 + 2268712161 = 96926^2 + 47631^2 .

It is a cyclic number.

It is not a de Polignac number, because 11663361637 - 2⁷ = 11663361509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11663361593 and 11663361602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11663364637) 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, 5831680818 + 5831680819.

It is an arithmetic number, because the mean of its divisors is an integer number (5831680819).

Almost surely, 2^11663361637 is an apocalyptic number.

It is an amenable number.

11663361637 is a deficient number, since it is larger than the sum of its proper divisors (1).

11663361637 is an equidigital number, since it uses as much as digits as its factorization.

11663361637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 43.

The spelling of 11663361637 in words is "eleven billion, six hundred sixty-three million, three hundred sixty-one thousand, six hundred thirty-seven".