13044646844 has 12 divisors (see below), whose sum is σ = 22901067504. Its totient is φ = 6501484704.

The previous prime is 13044646841. The next prime is 13044646957. The reversal of 13044646844 is 44864644031.

It is a happy number.

It is a super-2 number, since 2×13044646844² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13044646795 and 13044646804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13044646841) 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, 5208272 + ... + 5210775.

It is an arithmetic number, because the mean of its divisors is an integer number (1908422292).

Almost surely, 2^13044646844 is an apocalyptic number.

It is an amenable number.

13044646844 is a deficient number, since it is larger than the sum of its proper divisors (9856420660).

13044646844 is a wasteful number, since it uses less digits than its factorization.

13044646844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10419364 (or 10419362 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 44.

The spelling of 13044646844 in words is "thirteen billion, forty-four million, six hundred forty-six thousand, eight hundred forty-four".