13720663660 has 48 divisors (see below), whose sum is σ = 31450954752. Its totient is φ = 4986449600.

The previous prime is 13720663613. The next prime is 13720663669. The reversal of 13720663660 is 6636602731.

13720663660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13720663660² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13720663669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 383955 + ... + 418165.

It is an arithmetic number, because the mean of its divisors is an integer number (655228224).

Almost surely, 2^13720663660 is an apocalyptic number.

13720663660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13720663660 is an abundant number, since it is smaller than the sum of its proper divisors (17730291092).

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

13720663660 is a wasteful number, since it uses less digits than its factorization.

13720663660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36054 (or 36052 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 40.

The spelling of 13720663660 in words is "thirteen billion, seven hundred twenty million, six hundred sixty-three thousand, six hundred sixty".