268182484281809 has 2 divisors, whose sum is σ = 268182484281810. Its totient is φ = 268182484281808.

The previous prime is 268182484281791. The next prime is 268182484281869. The reversal of 268182484281809 is 908182484281862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168219680822209 + 99962803459600 = 12969953^2 + 9998140^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268182484281809 is a prime.

It is not a weakly prime, because it can be changed into another prime (268182484281869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134091242140904 + 134091242140905.

It is an arithmetic number, because the mean of its divisors is an integer number (134091242140905).

Almost surely, 2^{268182484281809} is an apocalyptic number.

It is an amenable number.

268182484281809 is a deficient number, since it is larger than the sum of its proper divisors (1).

268182484281809 is an equidigital number, since it uses as much as digits as its factorization.

268182484281809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226492416, while the sum is 71.

The spelling of 268182484281809 in words is "two hundred sixty-eight trillion, one hundred eighty-two billion, four hundred eighty-four million, two hundred eighty-one thousand, eight hundred nine".