266885022997 has 2 divisors, whose sum is σ = 266885022998. Its totient is φ = 266885022996.

The previous prime is 266885022919. The next prime is 266885023001. The reversal of 266885022997 is 799220588662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 243049986001 + 23835036996 = 493001^2 + 154386^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266885022997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266885022197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133442511498 + 133442511499.

It is an arithmetic number, because the mean of its divisors is an integer number (133442511499).

Almost surely, 2^266885022997 is an apocalyptic number.

It is an amenable number.

266885022997 is a deficient number, since it is larger than the sum of its proper divisors (1).

266885022997 is an equidigital number, since it uses as much as digits as its factorization.

266885022997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52254720, while the sum is 64.

The spelling of 266885022997 in words is "two hundred sixty-six billion, eight hundred eighty-five million, twenty-two thousand, nine hundred ninety-seven".