13001706720 has 144 divisors (see below), whose sum is σ = 44466432192. Its totient is φ = 3459456000.

The previous prime is 13001706701. The next prime is 13001706721. The reversal of 13001706720 is 2760710031.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13001706721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 656970 + ... + 676470.

It is an arithmetic number, because the mean of its divisors is an integer number (308794668).

Almost surely, 2^13001706720 is an apocalyptic number.

13001706720 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 13001706720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22233216096).

13001706720 is an abundant number, since it is smaller than the sum of its proper divisors (31464725472).

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

13001706720 is a wasteful number, since it uses less digits than its factorization.

13001706720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19985 (or 19974 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The spelling of 13001706720 in words is "thirteen billion, one million, seven hundred six thousand, seven hundred twenty".