266479991111 has 2 divisors, whose sum is σ = 266479991112. Its totient is φ = 266479991110.

The previous prime is 266479991069. The next prime is 266479991131. The reversal of 266479991111 is 111199974662.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266479991111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266479991131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133239995555 + 133239995556.

It is an arithmetic number, because the mean of its divisors is an integer number (133239995556).

Almost surely, 2^266479991111 is an apocalyptic number.

266479991111 is a deficient number, since it is larger than the sum of its proper divisors (1).

266479991111 is an equidigital number, since it uses as much as digits as its factorization.

266479991111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 56.

The spelling of 266479991111 in words is "two hundred sixty-six billion, four hundred seventy-nine million, nine hundred ninety-one thousand, one hundred eleven".