266216351 has 2 divisors, whose sum is σ = 266216352. Its totient is φ = 266216350.

The previous prime is 266216347. The next prime is 266216359. The reversal of 266216351 is 153612662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 266216351 - 2² = 266216347 is a prime.

It is a super-2 number, since 2×266216351² = 141742291079510402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266216359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133108175 + 133108176.

It is an arithmetic number, because the mean of its divisors is an integer number (133108176).

Almost surely, 2^266216351 is an apocalyptic number.

266216351 is a deficient number, since it is larger than the sum of its proper divisors (1).

266216351 is an equidigital number, since it uses as much as digits as its factorization.

266216351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 32.

The square root of 266216351 is about 16316.1377476411. The cubic root of 266216351 is about 643.2970731052.

The spelling of 266216351 in words is "two hundred sixty-six million, two hundred sixteen thousand, three hundred fifty-one".