13806318785 has 16 divisors (see below), whose sum is σ = 18990581376. Its totient is φ = 9439089408.

The previous prime is 13806318739. The next prime is 13806318829. The reversal of 13806318785 is 58781360831.

It is not a de Polignac number, because 13806318785 - 2¹² = 13806314689 is a prime.

It is a super-2 number, since 2×13806318785² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 573467 + ... + 597056.

It is an arithmetic number, because the mean of its divisors is an integer number (1186911336).

Almost surely, 2^13806318785 is an apocalyptic number.

It is an amenable number.

13806318785 is a deficient number, since it is larger than the sum of its proper divisors (5184262591).

13806318785 is a wasteful number, since it uses less digits than its factorization.

13806318785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170872.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 13806318785 in words is "thirteen billion, eight hundred six million, three hundred eighteen thousand, seven hundred eighty-five".