20333233091 has 2 divisors, whose sum is σ = 20333233092. Its totient is φ = 20333233090.

The previous prime is 20333233087. The next prime is 20333233103. The reversal of 20333233091 is 19033233302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20333233091 - 2² = 20333233087 is a prime.

It is not a weakly prime, because it can be changed into another prime (20333233031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10166616545 + 10166616546.

It is an arithmetic number, because the mean of its divisors is an integer number (10166616546).

Almost surely, 2^20333233091 is an apocalyptic number.

20333233091 is a deficient number, since it is larger than the sum of its proper divisors (1).

20333233091 is an equidigital number, since it uses as much as digits as its factorization.

20333233091 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 29.

Adding to 20333233091 its reverse (19033233302), we get a palindrome (39366466393).

The spelling of 20333233091 in words is "twenty billion, three hundred thirty-three million, two hundred thirty-three thousand, ninety-one".