266122255667 has 4 divisors (see below), whose sum is σ = 266292957840. Its totient is φ = 265951553496.

The previous prime is 266122255639. The next prime is 266122255697. The reversal of 266122255667 is 766552221662.

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 266122255667 - 2²⁰ = 266121207091 is a prime.

It is a super-2 number, since 2×266122255667² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266122255697) 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, 85348748 + ... + 85351865.

It is an arithmetic number, because the mean of its divisors is an integer number (66573239460).

Almost surely, 2^266122255667 is an apocalyptic number.

266122255667 is a deficient number, since it is larger than the sum of its proper divisors (170702173).

266122255667 is a wasteful number, since it uses less digits than its factorization.

266122255667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170702172.

The product of its digits is 3628800, while the sum is 50.

The spelling of 266122255667 in words is "two hundred sixty-six billion, one hundred twenty-two million, two hundred fifty-five thousand, six hundred sixty-seven".