13668883397 has 8 divisors (see below), whose sum is σ = 15118183416. Its totient is φ = 12276418752.

The previous prime is 13668883369. The next prime is 13668883411. The reversal of 13668883397 is 79338886631.

It is a Cunningham number, because it is equal to 116914²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 56761156 + 13612122241 = 7534^2 + 116671^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13668883397 - 2²⁶ = 13601774533 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 (13668883357) 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, 14208338 + ... + 14209299.

It is an arithmetic number, because the mean of its divisors is an integer number (1889772927).

Almost surely, 2^13668883397 is an apocalyptic number.

It is an amenable number.

13668883397 is a deficient number, since it is larger than the sum of its proper divisors (1449300019).

13668883397 is a wasteful number, since it uses less digits than its factorization.

13668883397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28417687.

The product of its digits is 31352832, while the sum is 62.

The spelling of 13668883397 in words is "thirteen billion, six hundred sixty-eight million, eight hundred eighty-three thousand, three hundred ninety-seven".