13720206744 has 96 divisors (see below), whose sum is σ = 38802647520. Its totient is φ = 4371383808.

The previous prime is 13720206691. The next prime is 13720206781. The reversal of 13720206744 is 44760202731.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 13720206699 and 13720206708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3536934 + ... + 3540810.

It is an arithmetic number, because the mean of its divisors is an integer number (404194245).

Almost surely, 2^13720206744 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 13720206744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19401323760).

13720206744 is an abundant number, since it is smaller than the sum of its proper divisors (25082440776).

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

13720206744 is a wasteful number, since it uses less digits than its factorization.

13720206744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6049 (or 6042 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The spelling of 13720206744 in words is "thirteen billion, seven hundred twenty million, two hundred six thousand, seven hundred forty-four".