36643634663 has 2 divisors, whose sum is σ = 36643634664. Its totient is φ = 36643634662.

The previous prime is 36643634659. The next prime is 36643634717.

36643634663 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 36643634663 - 2² = 36643634659 is a prime.

It is a super-2 number, since 2×36643634663² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36643639663) 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, 18321817331 + 18321817332.

It is an arithmetic number, because the mean of its divisors is an integer number (18321817332).

Almost surely, 2^36643634663 is an apocalyptic number.

36643634663 is a deficient number, since it is larger than the sum of its proper divisors (1).

36643634663 is an equidigital number, since it uses as much as digits as its factorization.

36643634663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10077696, while the sum is 50.

The spelling of 36643634663 in words is "thirty-six billion, six hundred forty-three million, six hundred thirty-four thousand, six hundred sixty-three".