266133204644 has 12 divisors (see below), whose sum is σ = 467784797424. Its totient is φ = 132480405384.

The previous prime is 266133204637. The next prime is 266133204679. The reversal of 266133204644 is 446402331662.

It is a super-2 number, since 2×266133204644² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146548214 + ... + 146550029.

It is an arithmetic number, because the mean of its divisors is an integer number (38982066452).

Almost surely, 2^266133204644 is an apocalyptic number.

It is an amenable number.

266133204644 is a deficient number, since it is larger than the sum of its proper divisors (201651592780).

266133204644 is a wasteful number, since it uses less digits than its factorization.

266133204644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293098474 (or 293098472 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 41.

The spelling of 266133204644 in words is "two hundred sixty-six billion, one hundred thirty-three million, two hundred four thousand, six hundred forty-four".