13331803805 has 4 divisors (see below), whose sum is σ = 15998164572. Its totient is φ = 10665443040.

The previous prime is 13331803799. The next prime is 13331803813. The reversal of 13331803805 is 50830813331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9384571876 + 3947231929 = 96874^2 + 62827^2 .

It is not a de Polignac number, because 13331803805 - 2¹² = 13331799709 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 1333180376 + ... + 1333180385.

It is an arithmetic number, because the mean of its divisors is an integer number (3999541143).

Almost surely, 2^13331803805 is an apocalyptic number.

It is an amenable number.

13331803805 is a deficient number, since it is larger than the sum of its proper divisors (2666360767).

13331803805 is an equidigital number, since it uses as much as digits as its factorization.

13331803805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2666360766.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 13331803805 in words is "thirteen billion, three hundred thirty-one million, eight hundred three thousand, eight hundred five".