20799168233 has 2 divisors, whose sum is σ = 20799168234. Its totient is φ = 20799168232.

The previous prime is 20799168209. The next prime is 20799168251. The reversal of 20799168233 is 33286199702.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17290146064 + 3509022169 = 131492^2 + 59237^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20799168233 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20799168263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10399584116 + 10399584117.

It is an arithmetic number, because the mean of its divisors is an integer number (10399584117).

Almost surely, 2^20799168233 is an apocalyptic number.

It is an amenable number.

20799168233 is a deficient number, since it is larger than the sum of its proper divisors (1).

20799168233 is an equidigital number, since it uses as much as digits as its factorization.

20799168233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 50.

The spelling of 20799168233 in words is "twenty billion, seven hundred ninety-nine million, one hundred sixty-eight thousand, two hundred thirty-three".