13227132785 has 4 divisors (see below), whose sum is σ = 15872559348. Its totient is φ = 10581706224.

The previous prime is 13227132773. The next prime is 13227132797. The reversal of 13227132785 is 58723172231.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (13227132773) and next prime (13227132797).

It can be written as a sum of positive squares in 2 ways, for example, as 7850137201 + 5376995584 = 88601^2 + 73328^2 .

It is a cyclic number.

It is not a de Polignac number, because 13227132785 - 2¹⁰ = 13227131761 is a prime.

It is a Duffinian 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, 1322713274 + ... + 1322713283.

It is an arithmetic number, because the mean of its divisors is an integer number (3968139837).

Almost surely, 2^13227132785 is an apocalyptic number.

It is an amenable number.

13227132785 is a deficient number, since it is larger than the sum of its proper divisors (2645426563).

13227132785 is an equidigital number, since it uses as much as digits as its factorization.

13227132785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2645426562.

The product of its digits is 141120, while the sum is 41.

The spelling of 13227132785 in words is "thirteen billion, two hundred twenty-seven million, one hundred thirty-two thousand, seven hundred eighty-five".