800381951166 has 48 divisors (see below), whose sum is σ = 1862345295360. Its totient is φ = 228652043760.

The previous prime is 800381951143. The next prime is 800381951209. The reversal of 800381951166 is 661159183008.

It is a super-2 number, since 2×800381951166² (a number of 25 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 2250771 + ... + 2582001.

It is an arithmetic number, because the mean of its divisors is an integer number (38798860320).

Almost surely, 2^800381951166 is an apocalyptic number.

800381951166 is an abundant number, since it is smaller than the sum of its proper divisors (1061963344194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

800381951166 is a wasteful number, since it uses less digits than its factorization.

800381951166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339469 (or 339462 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 48.

The spelling of 800381951166 in words is "eight hundred billion, three hundred eighty-one million, nine hundred fifty-one thousand, one hundred sixty-six".