33020020993 has 2 divisors, whose sum is σ = 33020020994. Its totient is φ = 33020020992.

The previous prime is 33020020991. The next prime is 33020021051. The reversal of 33020020993 is 39902002033.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27678311424 + 5341709569 = 166368^2 + 73087^2 .

It is a cyclic number.

It is not a de Polignac number, because 33020020993 - 2¹ = 33020020991 is a prime.

Together with 33020020991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (33020020991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16510010496 + 16510010497.

It is an arithmetic number, because the mean of its divisors is an integer number (16510010497).

Almost surely, 2^33020020993 is an apocalyptic number.

It is an amenable number.

33020020993 is a deficient number, since it is larger than the sum of its proper divisors (1).

33020020993 is an equidigital number, since it uses as much as digits as its factorization.

33020020993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 31.

The spelling of 33020020993 in words is "thirty-three billion, twenty million, twenty thousand, nine hundred ninety-three".