11636165641 has 2 divisors, whose sum is σ = 11636165642. Its totient is φ = 11636165640.

The previous prime is 11636165609. The next prime is 11636165663. The reversal of 11636165641 is 14656163611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7258358416 + 4377807225 = 85196^2 + 66165^2 .

It is a cyclic number.

It is not a de Polignac number, because 11636165641 - 2⁵ = 11636165609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11636165594 and 11636165603.

It is not a weakly prime, because it can be changed into another prime (11636168641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5818082820 + 5818082821.

It is an arithmetic number, because the mean of its divisors is an integer number (5818082821).

Almost surely, 2^11636165641 is an apocalyptic number.

It is an amenable number.

11636165641 is a deficient number, since it is larger than the sum of its proper divisors (1).

11636165641 is an equidigital number, since it uses as much as digits as its factorization.

11636165641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 40.

The spelling of 11636165641 in words is "eleven billion, six hundred thirty-six million, one hundred sixty-five thousand, six hundred forty-one".