20032033309 has 2 divisors, whose sum is σ = 20032033310. Its totient is φ = 20032033308.

The previous prime is 20032033289. The next prime is 20032033327. The reversal of 20032033309 is 90333023002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16774135225 + 3257898084 = 129515^2 + 57078^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20032033309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20032033349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10016016654 + 10016016655.

It is an arithmetic number, because the mean of its divisors is an integer number (10016016655).

Almost surely, 2^20032033309 is an apocalyptic number.

It is an amenable number.

20032033309 is a deficient number, since it is larger than the sum of its proper divisors (1).

20032033309 is an equidigital number, since it uses as much as digits as its factorization.

20032033309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 25.

The spelling of 20032033309 in words is "twenty billion, thirty-two million, thirty-three thousand, three hundred nine".