266315545034251 has 2 divisors, whose sum is σ = 266315545034252. Its totient is φ = 266315545034250.

The previous prime is 266315545034233. The next prime is 266315545034257. The reversal of 266315545034251 is 152430545513662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 266315545034251 - 2⁹ = 266315545033739 is a prime.

It is not a weakly prime, because it can be changed into another prime (266315545034257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133157772517125 + 133157772517126.

It is an arithmetic number, because the mean of its divisors is an integer number (133157772517126).

Almost surely, 2^{266315545034251} is an apocalyptic number.

266315545034251 is a deficient number, since it is larger than the sum of its proper divisors (1).

266315545034251 is an equidigital number, since it uses as much as digits as its factorization.

266315545034251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960000, while the sum is 52.

The spelling of 266315545034251 in words is "two hundred sixty-six trillion, three hundred fifteen billion, five hundred forty-five million, thirty-four thousand, two hundred fifty-one".