13045949820784 has 80 divisors (see below), whose sum is σ = 26778497673600. Its totient is φ = 6139822664448.

The previous prime is 13045949820767. The next prime is 13045949820791. The reversal of 13045949820784 is 48702894954031.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164621682 + ... + 164700910.

It is an arithmetic number, because the mean of its divisors is an integer number (334731220920).

Almost surely, 2^{13045949820784} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13045949820784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13389248836800).

13045949820784 is an abundant number, since it is smaller than the sum of its proper divisors (13732547852816).

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

13045949820784 is a wasteful number, since it uses less digits than its factorization.

13045949820784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82742 (or 82736 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 64.

The spelling of 13045949820784 in words is "thirteen trillion, forty-five billion, nine hundred forty-nine million, eight hundred twenty thousand, seven hundred eighty-four".