13420008056 has 64 divisors (see below), whose sum is σ = 31000536000. Its totient is φ = 5303651328.

The previous prime is 13420008037. The next prime is 13420008079. The reversal of 13420008056 is 65080002431.

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, 754886 + ... + 772458.

It is an arithmetic number, because the mean of its divisors is an integer number (484383375).

Almost surely, 2^13420008056 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 13420008056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15500268000).

13420008056 is an abundant number, since it is smaller than the sum of its proper divisors (17580527944).

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

13420008056 is a wasteful number, since it uses less digits than its factorization.

13420008056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18648 (or 18644 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 13420008056 in words is "thirteen billion, four hundred twenty million, eight thousand, fifty-six".