33116565749 has 4 divisors (see below), whose sum is σ = 33121331520. Its totient is φ = 33111799980.

The previous prime is 33116565737. The next prime is 33116565787. The reversal of 33116565749 is 94756561133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 33116565749 - 2²⁰ = 33115517173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33116565697 and 33116565706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33116565719) 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, 2372447 + ... + 2386364.

It is an arithmetic number, because the mean of its divisors is an integer number (8280332880).

Almost surely, 2^33116565749 is an apocalyptic number.

It is an amenable number.

33116565749 is a deficient number, since it is larger than the sum of its proper divisors (4765771).

33116565749 is an equidigital number, since it uses as much as digits as its factorization.

33116565749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4765770.

The product of its digits is 2041200, while the sum is 50.

The spelling of 33116565749 in words is "thirty-three billion, one hundred sixteen million, five hundred sixty-five thousand, seven hundred forty-nine".