211266263423 has 2 divisors, whose sum is σ = 211266263424. Its totient is φ = 211266263422.

The previous prime is 211266263371. The next prime is 211266263447. The reversal of 211266263423 is 324362662112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211266263423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211266263473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105633131711 + 105633131712.

It is an arithmetic number, because the mean of its divisors is an integer number (105633131712).

Almost surely, 2^211266263423 is an apocalyptic number.

211266263423 is a deficient number, since it is larger than the sum of its proper divisors (1).

211266263423 is an equidigital number, since it uses as much as digits as its factorization.

211266263423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 38.

The spelling of 211266263423 in words is "two hundred eleven billion, two hundred sixty-six million, two hundred sixty-three thousand, four hundred twenty-three".