266480691619 has 2 divisors, whose sum is σ = 266480691620. Its totient is φ = 266480691618.

The previous prime is 266480691559. The next prime is 266480691637. The reversal of 266480691619 is 916196084662.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 266480691619 - 2¹¹ = 266480689571 is a prime.

It is a super-2 number, since 2×266480691619² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (266480691649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133240345809 + 133240345810.

It is an arithmetic number, because the mean of its divisors is an integer number (133240345810).

Almost surely, 2^266480691619 is an apocalyptic number.

266480691619 is a deficient number, since it is larger than the sum of its proper divisors (1).

266480691619 is an equidigital number, since it uses as much as digits as its factorization.

266480691619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6718464, while the sum is 58.

The spelling of 266480691619 in words is "two hundred sixty-six billion, four hundred eighty million, six hundred ninety-one thousand, six hundred nineteen".