13668469933 has 4 divisors (see below), whose sum is σ = 13668737500. Its totient is φ = 13668202368.

The previous prime is 13668469891. The next prime is 13668469939. The reversal of 13668469933 is 33996486631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7534760809 + 6133709124 = 86803^2 + 78318^2 .

It is a cyclic number.

It is not a de Polignac number, because 13668469933 - 2²⁹ = 13131599021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13668469939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30660 + ... + 168157.

It is an arithmetic number, because the mean of its divisors is an integer number (3417184375).

Almost surely, 2^13668469933 is an apocalyptic number.

It is an amenable number.

13668469933 is a deficient number, since it is larger than the sum of its proper divisors (267567).

13668469933 is an equidigital number, since it uses as much as digits as its factorization.

13668469933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267566.

The product of its digits is 15116544, while the sum is 58.

The spelling of 13668469933 in words is "thirteen billion, six hundred sixty-eight million, four hundred sixty-nine thousand, nine hundred thirty-three".