27023991166 has 4 divisors (see below), whose sum is σ = 40535986752. Its totient is φ = 13511995582.

The previous prime is 27023991149. The next prime is 27023991167. The reversal of 27023991166 is 66119932072.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27023991167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6755997790 + ... + 6755997793.

It is an arithmetic number, because the mean of its divisors is an integer number (10133996688).

Almost surely, 2^27023991166 is an apocalyptic number.

27023991166 is a deficient number, since it is larger than the sum of its proper divisors (13511995586).

27023991166 is a wasteful number, since it uses less digits than its factorization.

27023991166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13511995585.

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 27023991166 in words is "twenty-seven billion, twenty-three million, nine hundred ninety-one thousand, one hundred sixty-six".