33116324561 has 4 divisors (see below), whose sum is σ = 33137459712. Its totient is φ = 33095189412.

The previous prime is 33116324533. The next prime is 33116324573. The reversal of 33116324561 is 16542361133.

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 33116324561 - 2¹⁸ = 33116062417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33116324161) 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, 10565225 + ... + 10568358.

It is an arithmetic number, because the mean of its divisors is an integer number (8284364928).

Almost surely, 2^33116324561 is an apocalyptic number.

It is an amenable number.

33116324561 is a deficient number, since it is larger than the sum of its proper divisors (21135151).

33116324561 is a wasteful number, since it uses less digits than its factorization.

33116324561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21135150.

The product of its digits is 38880, while the sum is 35.

Adding to 33116324561 its reverse (16542361133), we get a palindrome (49658685694).

The spelling of 33116324561 in words is "thirty-three billion, one hundred sixteen million, three hundred twenty-four thousand, five hundred sixty-one".