268446815149 has 2 divisors, whose sum is σ = 268446815150. Its totient is φ = 268446815148.

The previous prime is 268446814997. The next prime is 268446815167. The reversal of 268446815149 is 941518644862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 254740259524 + 13706555625 = 504718^2 + 117075^2 .

It is a cyclic number.

It is not a de Polignac number, because 268446815149 - 2⁹ = 268446814637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 268446815093 and 268446815102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268446812149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134223407574 + 134223407575.

It is an arithmetic number, because the mean of its divisors is an integer number (134223407575).

Almost surely, 2^268446815149 is an apocalyptic number.

It is an amenable number.

268446815149 is a deficient number, since it is larger than the sum of its proper divisors (1).

268446815149 is an equidigital number, since it uses as much as digits as its factorization.

268446815149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13271040, while the sum is 58.

The spelling of 268446815149 in words is "two hundred sixty-eight billion, four hundred forty-six million, eight hundred fifteen thousand, one hundred forty-nine".