266055558479 has 4 divisors (see below), whose sum is σ = 266189458584. Its totient is φ = 265921658376.

The previous prime is 266055558469. The next prime is 266055558499. The reversal of 266055558479 is 974855550662.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 266055558479 - 2²⁴ = 266038781263 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 (266055558409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66947072 + ... + 66951045.

It is an arithmetic number, because the mean of its divisors is an integer number (66547364646).

Almost surely, 2^266055558479 is an apocalyptic number.

266055558479 is a deficient number, since it is larger than the sum of its proper divisors (133900105).

266055558479 is a wasteful number, since it uses less digits than its factorization.

266055558479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133900104.

The product of its (nonzero) digits is 90720000, while the sum is 62.

The spelling of 266055558479 in words is "two hundred sixty-six billion, fifty-five million, five hundred fifty-eight thousand, four hundred seventy-nine".