13636443044 has 36 divisors (see below), whose sum is σ = 28966863744. Its totient is φ = 5590092816.

The previous prime is 13636443043. The next prime is 13636443059. The reversal of 13636443044 is 44034463631.

It is a junction number, because it is equal to n+sod(n) for n = 13636442989 and 13636443007.

It is not an unprimeable number, because it can be changed into a prime (13636443043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1507964 + ... + 1516979.

It is an arithmetic number, because the mean of its divisors is an integer number (804635104).

Almost surely, 2^13636443044 is an apocalyptic number.

13636443044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13636443044 is an abundant number, since it is smaller than the sum of its proper divisors (15330420700).

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

13636443044 is a wasteful number, since it uses less digits than its factorization.

13636443044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3024984 (or 3024975 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 38.

The spelling of 13636443044 in words is "thirteen billion, six hundred thirty-six million, four hundred forty-three thousand, forty-four".