266696272607 has 2 divisors, whose sum is σ = 266696272608. Its totient is φ = 266696272606.

The previous prime is 266696272567. The next prime is 266696272621. The reversal of 266696272607 is 706272696662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 266696272607 - 2⁶ = 266696272543 is a prime.

It is a super-2 number, since 2×266696272607² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266696272907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133348136303 + 133348136304.

It is an arithmetic number, because the mean of its divisors is an integer number (133348136304).

Almost surely, 2^266696272607 is an apocalyptic number.

266696272607 is a deficient number, since it is larger than the sum of its proper divisors (1).

266696272607 is an equidigital number, since it uses as much as digits as its factorization.

266696272607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27433728, while the sum is 59.

The spelling of 266696272607 in words is "two hundred sixty-six billion, six hundred ninety-six million, two hundred seventy-two thousand, six hundred seven".