266066081870 has 8 divisors (see below), whose sum is σ = 478918947384. Its totient is φ = 106426432744.

The previous prime is 266066081851. The next prime is 266066081899. The reversal of 266066081870 is 78180660662.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13303304084 + ... + 13303304103.

It is an arithmetic number, because the mean of its divisors is an integer number (59864868423).

Almost surely, 2^266066081870 is an apocalyptic number.

266066081870 is a deficient number, since it is larger than the sum of its proper divisors (212852865514).

266066081870 is a wasteful number, since it uses less digits than its factorization.

266066081870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26606608194.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 266066081870 in words is "two hundred sixty-six billion, sixty-six million, eighty-one thousand, eight hundred seventy".