13642641263 has 2 divisors, whose sum is σ = 13642641264. Its totient is φ = 13642641262.

The previous prime is 13642641241. The next prime is 13642641289. The reversal of 13642641263 is 36214624631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13642641263 - 2⁸ = 13642641007 is a prime.

It is a super-2 number, since 2×13642641263² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13642641203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6821320631 + 6821320632.

It is an arithmetic number, because the mean of its divisors is an integer number (6821320632).

Almost surely, 2^13642641263 is an apocalyptic number.

13642641263 is a deficient number, since it is larger than the sum of its proper divisors (1).

13642641263 is an equidigital number, since it uses as much as digits as its factorization.

13642641263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 38.

The spelling of 13642641263 in words is "thirteen billion, six hundred forty-two million, six hundred forty-one thousand, two hundred sixty-three".