20804200337 has 2 divisors, whose sum is σ = 20804200338. Its totient is φ = 20804200336.

The previous prime is 20804200303. The next prime is 20804200387. The reversal of 20804200337 is 73300240802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18969277441 + 1834922896 = 137729^2 + 42836^2 .

It is a cyclic number.

It is not a de Polignac number, because 20804200337 - 2²⁴ = 20787423121 is a prime.

It is not a weakly prime, because it can be changed into another prime (20804200387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10402100168 + 10402100169.

It is an arithmetic number, because the mean of its divisors is an integer number (10402100169).

Almost surely, 2^20804200337 is an apocalyptic number.

It is an amenable number.

20804200337 is a deficient number, since it is larger than the sum of its proper divisors (1).

20804200337 is an equidigital number, since it uses as much as digits as its factorization.

20804200337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 29.

The spelling of 20804200337 in words is "twenty billion, eight hundred four million, two hundred thousand, three hundred thirty-seven".