20001323263 has 2 divisors, whose sum is σ = 20001323264. Its totient is φ = 20001323262.

The previous prime is 20001323249. The next prime is 20001323333. The reversal of 20001323263 is 36232310002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20001323263 - 2⁵ = 20001323231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20001323233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000661631 + 10000661632.

It is an arithmetic number, because the mean of its divisors is an integer number (10000661632).

Almost surely, 2^20001323263 is an apocalyptic number.

20001323263 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001323263 is an equidigital number, since it uses as much as digits as its factorization.

20001323263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 20001323263 its reverse (36232310002), we get a palindrome (56233633265).

The spelling of 20001323263 in words is "twenty billion, one million, three hundred twenty-three thousand, two hundred sixty-three".