20039317933 has 2 divisors, whose sum is σ = 20039317934. Its totient is φ = 20039317932.

The previous prime is 20039317913. The next prime is 20039317943. The reversal of 20039317933 is 33971393002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17385213609 + 2654104324 = 131853^2 + 51518^2 .

It is a cyclic number.

It is not a de Polignac number, because 20039317933 - 2⁹ = 20039317421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20039317913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10019658966 + 10019658967.

It is an arithmetic number, because the mean of its divisors is an integer number (10019658967).

Almost surely, 2^20039317933 is an apocalyptic number.

It is an amenable number.

20039317933 is a deficient number, since it is larger than the sum of its proper divisors (1).

20039317933 is an equidigital number, since it uses as much as digits as its factorization.

20039317933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 91854, while the sum is 40.

The spelling of 20039317933 in words is "twenty billion, thirty-nine million, three hundred seventeen thousand, nine hundred thirty-three".