13628689660 has 24 divisors (see below), whose sum is σ = 29105339760. Its totient is φ = 5359077504.

The previous prime is 13628689651. The next prime is 13628689663. The reversal of 13628689660 is 6698682631.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13628689663) 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, 5773689 + ... + 5776048.

It is an arithmetic number, because the mean of its divisors is an integer number (1212722490).

Almost surely, 2^13628689660 is an apocalyptic number.

13628689660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13628689660 is an abundant number, since it is smaller than the sum of its proper divisors (15476650100).

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

13628689660 is a wasteful number, since it uses less digits than its factorization.

13628689660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11549805 (or 11549803 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 55.

The spelling of 13628689660 in words is "thirteen billion, six hundred twenty-eight million, six hundred eighty-nine thousand, six hundred sixty".