268386511 has 2 divisors, whose sum is σ = 268386512. Its totient is φ = 268386510.

The previous prime is 268386479. The next prime is 268386553. The reversal of 268386511 is 115683862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 268386511 - 2⁵ = 268386479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268386611) 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, 134193255 + 134193256.

It is an arithmetic number, because the mean of its divisors is an integer number (134193256).

Almost surely, 2^268386511 is an apocalyptic number.

268386511 is a deficient number, since it is larger than the sum of its proper divisors (1).

268386511 is an equidigital number, since it uses as much as digits as its factorization.

268386511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 40.

The square root of 268386511 is about 16382.5062490450. The cubic root of 268386511 is about 645.0403684447.

The spelling of 268386511 in words is "two hundred sixty-eight million, three hundred eighty-six thousand, five hundred eleven".