266193242351 has 2 divisors, whose sum is σ = 266193242352. Its totient is φ = 266193242350.

The previous prime is 266193242339. The next prime is 266193242353. The reversal of 266193242351 is 153242391662.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266193242351 is a prime.

Together with 266193242353, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266193242353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133096621175 + 133096621176.

It is an arithmetic number, because the mean of its divisors is an integer number (133096621176).

Almost surely, 2^266193242351 is an apocalyptic number.

266193242351 is a deficient number, since it is larger than the sum of its proper divisors (1).

266193242351 is an equidigital number, since it uses as much as digits as its factorization.

266193242351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 44.

The spelling of 266193242351 in words is "two hundred sixty-six billion, one hundred ninety-three million, two hundred forty-two thousand, three hundred fifty-one".