33000067813 has 4 divisors (see below), whose sum is σ = 33007766220. Its totient is φ = 32992369408.

The previous prime is 33000067799. The next prime is 33000067883. The reversal of 33000067813 is 31876000033.

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 14542671649 + 18457396164 = 120593^2 + 135858^2 .

It is a cyclic number.

It is not a de Polignac number, because 33000067813 - 2³³ = 24410133221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33000067883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3842770 + ... + 3851347.

It is an arithmetic number, because the mean of its divisors is an integer number (8251941555).

Almost surely, 2^33000067813 is an apocalyptic number.

It is an amenable number.

33000067813 is a deficient number, since it is larger than the sum of its proper divisors (7698407).

33000067813 is an equidigital number, since it uses as much as digits as its factorization.

33000067813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7698406.

The product of its (nonzero) digits is 9072, while the sum is 31.

Adding to 33000067813 its reverse (31876000033), we get a palindrome (64876067846).

The spelling of 33000067813 in words is "thirty-three billion, sixty-seven thousand, eight hundred thirteen".