13722706720 has 24 divisors (see below), whose sum is σ = 32419895004. Its totient is φ = 5489082624.

The previous prime is 13722706717. The next prime is 13722706727. The reversal of 13722706720 is 2760722731.

It can be written as a sum of positive squares in 2 ways, for example, as 13658129424 + 64577296 = 116868^2 + 8036^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13722706720.

It is not an unprimeable number, because it can be changed into a prime (13722706727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42883299 + ... + 42883618.

Almost surely, 2^13722706720 is an apocalyptic number.

13722706720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13722706720 is an abundant number, since it is smaller than the sum of its proper divisors (18697188284).

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

13722706720 is an equidigital number, since it uses as much as digits as its factorization.

13722706720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85766932 (or 85766924 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 37.

The spelling of 13722706720 in words is "thirteen billion, seven hundred twenty-two million, seven hundred six thousand, seven hundred twenty".