266464543 has 2 divisors, whose sum is σ = 266464544. Its totient is φ = 266464542.

The previous prime is 266464501. The next prime is 266464547. The reversal of 266464543 is 345464662.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266464543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 266464496 and 266464505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266464547) 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, 133232271 + 133232272.

It is an arithmetic number, because the mean of its divisors is an integer number (133232272).

Almost surely, 2^266464543 is an apocalyptic number.

266464543 is a deficient number, since it is larger than the sum of its proper divisors (1).

266464543 is an equidigital number, since it uses as much as digits as its factorization.

266464543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 40.

The square root of 266464543 is about 16323.7416972948. The cubic root of 266464543 is about 643.4969250867.

The spelling of 266464543 in words is "two hundred sixty-six million, four hundred sixty-four thousand, five hundred forty-three".