13799136720 has 80 divisors (see below), whose sum is σ = 43258034880. Its totient is φ = 3638418432.

The previous prime is 13799136719. The next prime is 13799136761. The reversal of 13799136720 is 2763199731.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 13799136720.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301654 + ... + 344373.

It is an arithmetic number, because the mean of its divisors is an integer number (540725436).

Almost surely, 2^13799136720 is an apocalyptic number.

13799136720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13799136720 is an abundant number, since it is smaller than the sum of its proper divisors (29458898160).

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

13799136720 is a wasteful number, since it uses less digits than its factorization.

13799136720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646132 (or 646126 counting only the distinct ones).

The product of its (nonzero) digits is 428652, while the sum is 48.

The spelling of 13799136720 in words is "thirteen billion, seven hundred ninety-nine million, one hundred thirty-six thousand, seven hundred twenty".