13636641044 has 12 divisors (see below), whose sum is σ = 25699823604. Its totient is φ = 6293834304.

The previous prime is 13636641023. The next prime is 13636641047. The reversal of 13636641044 is 44014663631.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2270522500 + 11366118544 = 47650^2 + 106612^2 .

It is a super-3 number, since 3×13636641044³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13636640989 and 13636641007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13636641047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131121497 + ... + 131121600.

It is an arithmetic number, because the mean of its divisors is an integer number (2141651967).

Almost surely, 2^13636641044 is an apocalyptic number.

It is an amenable number.

13636641044 is a deficient number, since it is larger than the sum of its proper divisors (12063182560).

13636641044 is a wasteful number, since it uses less digits than its factorization.

13636641044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262243114 (or 262243112 counting only the distinct ones).

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

The spelling of 13636641044 in words is "thirteen billion, six hundred thirty-six million, six hundred forty-one thousand, forty-four".