13373056640 has 128 divisors (see below), whose sum is σ = 32760115200. Its totient is φ = 5217804288.

The previous prime is 13373056621. The next prime is 13373056703. The reversal of 13373056640 is 4665037331.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 13373056594 and 13373056603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12302177 + ... + 12303263.

It is an arithmetic number, because the mean of its divisors is an integer number (255938400).

Almost surely, 2^13373056640 is an apocalyptic number.

13373056640 is a gapful number since it is divisible by the number (10) 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 13373056640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16380057600).

13373056640 is an abundant number, since it is smaller than the sum of its proper divisors (19387058560).

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

13373056640 is a wasteful number, since it uses less digits than its factorization.

13373056640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1562 (or 1550 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 38.

The spelling of 13373056640 in words is "thirteen billion, three hundred seventy-three million, fifty-six thousand, six hundred forty".