13666497793 has 8 divisors (see below), whose sum is σ = 14937435968. Its totient is φ = 12426940944.

The previous prime is 13666497769. The next prime is 13666497893. The reversal of 13666497793 is 39779466631.

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

It is a cyclic number.

It is not a de Polignac number, because 13666497793 - 2²⁵ = 13632943361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13666497743) 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, 7844421 + ... + 7846162.

It is an arithmetic number, because the mean of its divisors is an integer number (1867179496).

Almost surely, 2^13666497793 is an apocalyptic number.

13666497793 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13666497793 is a deficient number, since it is larger than the sum of its proper divisors (1270938175).

13666497793 is a wasteful number, since it uses less digits than its factorization.

13666497793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15690663.

The product of its digits is 30862944, while the sum is 61.

The spelling of 13666497793 in words is "thirteen billion, six hundred sixty-six million, four hundred ninety-seven thousand, seven hundred ninety-three".