268108449901 has 2 divisors, whose sum is σ = 268108449902. Its totient is φ = 268108449900.

The previous prime is 268108449899. The next prime is 268108449907. The reversal of 268108449901 is 109944801862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182333270025 + 85775179876 = 427005^2 + 292874^2 .

It is a cyclic number.

It is not a de Polignac number, because 268108449901 - 2¹ = 268108449899 is a prime.

Together with 268108449899, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268108449907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134054224950 + 134054224951.

It is an arithmetic number, because the mean of its divisors is an integer number (134054224951).

Almost surely, 2^268108449901 is an apocalyptic number.

It is an amenable number.

268108449901 is a deficient number, since it is larger than the sum of its proper divisors (1).

268108449901 is an equidigital number, since it uses as much as digits as its factorization.

268108449901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 995328, while the sum is 52.

The spelling of 268108449901 in words is "two hundred sixty-eight billion, one hundred eight million, four hundred forty-nine thousand, nine hundred one".