13331499966 has 32 divisors (see below), whose sum is σ = 30581222400. Its totient is φ = 4300483320.

The previous prime is 13331499893. The next prime is 13331500001. The reversal of 13331499966 is 66999413331.

13331499966 is a `hidden beast` number, since 1 + 33 + 31 + 499 + 96 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3980256 + ... + 3983603.

It is an arithmetic number, because the mean of its divisors is an integer number (955663200).

Almost surely, 2^13331499966 is an apocalyptic number.

13331499966 is an abundant number, since it is smaller than the sum of its proper divisors (17249722434).

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

13331499966 is a wasteful number, since it uses less digits than its factorization.

13331499966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7963901 (or 7963895 counting only the distinct ones).

The product of its digits is 2834352, while the sum is 54.

The spelling of 13331499966 in words is "thirteen billion, three hundred thirty-one million, four hundred ninety-nine thousand, nine hundred sixty-six".