266006665221196 has 24 divisors (see below), whose sum is σ = 476345355005520. Its totient is φ = 129908094157632.

The previous prime is 266006665221127. The next prime is 266006665221371. The reversal of 266006665221196 is 691122566600662.

It is a self number, because there is not a number n which added to its sum of digits gives 266006665221196.

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 7 ways as a sum of consecutive naturals, for example, 2216191 + ... + 23171638.

It is an arithmetic number, because the mean of its divisors is an integer number (19847723125230).

Almost surely, 2^{266006665221196} is an apocalyptic number.

It is an amenable number.

266006665221196 is a deficient number, since it is larger than the sum of its proper divisors (210338689784324).

266006665221196 is a wasteful number, since it uses less digits than its factorization.

266006665221196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25448793 (or 25448791 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 58.

The spelling of 266006665221196 in words is "two hundred sixty-six trillion, six billion, six hundred sixty-five million, two hundred twenty-one thousand, one hundred ninety-six".