13806991546 has 8 divisors (see below), whose sum is σ = 20711287764. Its totient is φ = 6903228960.

The previous prime is 13806991529. The next prime is 13806991571. The reversal of 13806991546 is 64519960831.

It can be written as a sum of positive squares in 2 ways, for example, as 11440655521 + 2366336025 = 106961^2 + 48645^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 13806991493 and 13806991502.

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, 60825 + ... + 176956.

Almost surely, 2^13806991546 is an apocalyptic number.

13806991546 is a deficient number, since it is larger than the sum of its proper divisors (6904296218).

13806991546 is a wasteful number, since it uses less digits than its factorization.

13806991546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266816.

The product of its (nonzero) digits is 1399680, while the sum is 52.

The spelling of 13806991546 in words is "thirteen billion, eight hundred six million, nine hundred ninety-one thousand, five hundred forty-six".