13634869444 has 12 divisors (see below), whose sum is σ = 27269738944. Its totient is φ = 5843515464.

The previous prime is 13634869387. The next prime is 13634869489. The reversal of 13634869444 is 44496843631.

13634869444 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 13634869391 and 13634869400.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243479784 + ... + 243479839.

Almost surely, 2^13634869444 is an apocalyptic number.

13634869444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13634869444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13634869444 is a wasteful number, since it uses less digits than its factorization.

13634869444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486959634 (or 486959632 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 52.

The spelling of 13634869444 in words is "thirteen billion, six hundred thirty-four million, eight hundred sixty-nine thousand, four hundred forty-four".