20354311267 has 2 divisors, whose sum is σ = 20354311268. Its totient is φ = 20354311266.

The previous prime is 20354311253. The next prime is 20354311331. The reversal of 20354311267 is 76211345302.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20354311267 is a prime.

It is not a weakly prime, because it can be changed into another prime (20354311207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10177155633 + 10177155634.

It is an arithmetic number, because the mean of its divisors is an integer number (10177155634).

Almost surely, 2^20354311267 is an apocalyptic number.

20354311267 is a deficient number, since it is larger than the sum of its proper divisors (1).

20354311267 is an equidigital number, since it uses as much as digits as its factorization.

20354311267 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 34.

Adding to 20354311267 its reverse (76211345302), we get a palindrome (96565656569).

The spelling of 20354311267 in words is "twenty billion, three hundred fifty-four million, three hundred eleven thousand, two hundred sixty-seven".