13895556660 has 36 divisors (see below), whose sum is σ = 42149855748. Its totient is φ = 3705481728.

The previous prime is 13895556659. The next prime is 13895556761. The reversal of 13895556660 is 6665559831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4478018724 + 9417537936 = 66918^2 + 97044^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 13895556597 and 13895556606.

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 11 ways as a sum of consecutive naturals, for example, 38598589 + ... + 38598948.

Almost surely, 2^13895556660 is an apocalyptic number.

13895556660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13895556660 is an abundant number, since it is smaller than the sum of its proper divisors (28254299088).

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

13895556660 is a wasteful number, since it uses less digits than its factorization.

13895556660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77197552 (or 77197547 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 54.

The spelling of 13895556660 in words is "thirteen billion, eight hundred ninety-five million, five hundred fifty-six thousand, six hundred sixty".