268468023193 has 2 divisors, whose sum is σ = 268468023194. Its totient is φ = 268468023192.

The previous prime is 268468023097. The next prime is 268468023199. The reversal of 268468023193 is 391320864862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194139815769 + 74328207424 = 440613^2 + 272632^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268468023193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 268468023193.

It is not a weakly prime, because it can be changed into another prime (268468023199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134234011596 + 134234011597.

It is an arithmetic number, because the mean of its divisors is an integer number (134234011597).

Almost surely, 2^268468023193 is an apocalyptic number.

It is an amenable number.

268468023193 is a deficient number, since it is larger than the sum of its proper divisors (1).

268468023193 is an equidigital number, since it uses as much as digits as its factorization.

268468023193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2985984, while the sum is 52.

The spelling of 268468023193 in words is "two hundred sixty-eight billion, four hundred sixty-eight million, twenty-three thousand, one hundred ninety-three".