13330020660 has 72 divisors (see below), whose sum is σ = 41025639648. Its totient is φ = 3231518400.

The previous prime is 13330020617. The next prime is 13330020689. The reversal of 13330020660 is 6602003331.

It is a self number, because there is not a number n which added to its sum of digits gives 13330020660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 910786 + ... + 925305.

Almost surely, 2^13330020660 is an apocalyptic number.

13330020660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13330020660 is an abundant number, since it is smaller than the sum of its proper divisors (27695618988).

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

13330020660 is a wasteful number, since it uses less digits than its factorization.

13330020660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836125 (or 1836112 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 13330020660 its reverse (6602003331), we get a palindrome (19932023991).

The spelling of 13330020660 in words is "thirteen billion, three hundred thirty million, twenty thousand, six hundred sixty".