266255564479 has 8 divisors (see below), whose sum is σ = 269636544320. Its totient is φ = 262874851200.

The previous prime is 266255564441. The next prime is 266255564489. The reversal of 266255564479 is 974465552662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266255564479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266255564489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2633299 + ... + 2732539.

It is an arithmetic number, because the mean of its divisors is an integer number (33704568040).

Almost surely, 2^266255564479 is an apocalyptic number.

266255564479 is a deficient number, since it is larger than the sum of its proper divisors (3380979841).

266255564479 is an equidigital number, since it uses as much as digits as its factorization.

266255564479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133281.

The product of its digits is 108864000, while the sum is 61.

The spelling of 266255564479 in words is "two hundred sixty-six billion, two hundred fifty-five million, five hundred sixty-four thousand, four hundred seventy-nine".