13004644992 has 128 divisors (see below), whose sum is σ = 35015457600. Its totient is φ = 4276101120.

The previous prime is 13004644979. The next prime is 13004644999. The reversal of 13004644992 is 29944640031.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (13004644999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9416142 + ... + 9417522.

Almost surely, 2^13004644992 is an apocalyptic number.

13004644992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13004644992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17507728800).

13004644992 is an abundant number, since it is smaller than the sum of its proper divisors (22010812608).

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

13004644992 is a wasteful number, since it uses less digits than its factorization.

13004644992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714 (or 1702 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The spelling of 13004644992 in words is "thirteen billion, four million, six hundred forty-four thousand, nine hundred ninety-two".