13660066660 has 24 divisors (see below), whose sum is σ = 28912020480. Its totient is φ = 5421001824.

The previous prime is 13660066631. The next prime is 13660066669. The reversal of 13660066660 is 6666006631.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13660066669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2686450 + ... + 2691529.

It is an arithmetic number, because the mean of its divisors is an integer number (1204667520).

Almost surely, 2^13660066660 is an apocalyptic number.

13660066660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13660066660 is an abundant number, since it is smaller than the sum of its proper divisors (15251953820).

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

13660066660 is a wasteful number, since it uses less digits than its factorization.

13660066660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5378115 (or 5378113 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 40.

The spelling of 13660066660 in words is "thirteen billion, six hundred sixty million, sixty-six thousand, six hundred sixty".