13644652263 has 32 divisors (see below), whose sum is σ = 20543373312. Its totient is φ = 7980703200.

The previous prime is 13644652253. The next prime is 13644652321. The reversal of 13644652263 is 36225644631.

It is a happy number.

It is not a de Polignac number, because 13644652263 - 2¹³ = 13644644071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13644652213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 357270 + ... + 393612.

It is an arithmetic number, because the mean of its divisors is an integer number (641980416).

Almost surely, 2^13644652263 is an apocalyptic number.

13644652263 is a deficient number, since it is larger than the sum of its proper divisors (6898721049).

13644652263 is a wasteful number, since it uses less digits than its factorization.

13644652263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36755.

The product of its digits is 622080, while the sum is 42.

The spelling of 13644652263 in words is "thirteen billion, six hundred forty-four million, six hundred fifty-two thousand, two hundred sixty-three".