13391774866 has 8 divisors (see below), whose sum is σ = 20265429564. Its totient is φ = 6636631680.

The previous prime is 13391774833. The next prime is 13391774917. The reversal of 13391774866 is 66847719331.

It can be written as a sum of positive squares in 2 ways, for example, as 13364516025 + 27258841 = 115605^2 + 5221^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29627595 + ... + 29628046.

Almost surely, 2^13391774866 is an apocalyptic number.

13391774866 is a deficient number, since it is larger than the sum of its proper divisors (6873654698).

13391774866 is a wasteful number, since it uses less digits than its factorization.

13391774866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59255756.

The product of its digits is 4572288, while the sum is 55.

The spelling of 13391774866 in words is "thirteen billion, three hundred ninety-one million, seven hundred seventy-four thousand, eight hundred sixty-six".