33121880065 has 8 divisors (see below), whose sum is σ = 39782494440. Its totient is φ = 26473345152.

The previous prime is 33121880047. The next prime is 33121880069. The reversal of 33121880065 is 56008812133.

It can be written as a sum of positive squares in 4 ways, for example, as 8071281 + 33113808784 = 2841^2 + 181972^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33121880065 is a prime.

It is not an unprimeable number, because it can be changed into a prime (33121880069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3013830 + ... + 3024799.

It is an arithmetic number, because the mean of its divisors is an integer number (4972811805).

Almost surely, 2^33121880065 is an apocalyptic number.

It is an amenable number.

33121880065 is a deficient number, since it is larger than the sum of its proper divisors (6660614375).

33121880065 is a wasteful number, since it uses less digits than its factorization.

33121880065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6039731.

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 33121880065 in words is "thirty-three billion, one hundred twenty-one million, eight hundred eighty thousand, sixty-five".