13644812268 has 18 divisors (see below), whose sum is σ = 34491053324. Its totient is φ = 4548270744.

The previous prime is 13644812249. The next prime is 13644812299. The reversal of 13644812268 is 86221844631.

13644812268 is a `hidden beast` number, since 136 + 448 + 12 + 2 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 189511246 + ... + 189511317.

Almost surely, 2^13644812268 is an apocalyptic number.

13644812268 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13644812268 is an abundant number, since it is smaller than the sum of its proper divisors (20846241056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13644812268 is a wasteful number, since it uses less digits than its factorization.

13644812268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379022573 (or 379022568 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The spelling of 13644812268 in words is "thirteen billion, six hundred forty-four million, eight hundred twelve thousand, two hundred sixty-eight".