268661842247 has 2 divisors, whose sum is σ = 268661842248. Its totient is φ = 268661842246.

The previous prime is 268661842237. The next prime is 268661842283. The reversal of 268661842247 is 742248166862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 268661842247 - 2²⁸ = 268393406791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 268661842192 and 268661842201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268661842237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134330921123 + 134330921124.

It is an arithmetic number, because the mean of its divisors is an integer number (134330921124).

Almost surely, 2^268661842247 is an apocalyptic number.

268661842247 is a deficient number, since it is larger than the sum of its proper divisors (1).

268661842247 is an equidigital number, since it uses as much as digits as its factorization.

268661842247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12386304, while the sum is 56.

The spelling of 268661842247 in words is "two hundred sixty-eight billion, six hundred sixty-one million, eight hundred forty-two thousand, two hundred forty-seven".