268618109791 has 2 divisors, whose sum is σ = 268618109792. Its totient is φ = 268618109790.

The previous prime is 268618109741. The next prime is 268618109839. The reversal of 268618109791 is 197901816862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268618109791 - 2¹⁹ = 268617585503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268618109701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134309054895 + 134309054896.

It is an arithmetic number, because the mean of its divisors is an integer number (134309054896).

Almost surely, 2^268618109791 is an apocalyptic number.

268618109791 is a deficient number, since it is larger than the sum of its proper divisors (1).

268618109791 is an equidigital number, since it uses as much as digits as its factorization.

268618109791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 58.

The spelling of 268618109791 in words is "two hundred sixty-eight billion, six hundred eighteen million, one hundred nine thousand, seven hundred ninety-one".