158991135166 has 8 divisors (see below), whose sum is σ = 238499647344. Its totient is φ = 79491252720.

The previous prime is 158991135091. The next prime is 158991135187. The reversal of 158991135166 is 661531199851.

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

It is a super-2 number, since 2×158991135166² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 2111175 + ... + 2185186.

It is an arithmetic number, because the mean of its divisors is an integer number (29812455918).

Almost surely, 2^158991135166 is an apocalyptic number.

158991135166 is a deficient number, since it is larger than the sum of its proper divisors (79508512178).

158991135166 is a wasteful number, since it uses less digits than its factorization.

158991135166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4314866.

The product of its digits is 1749600, while the sum is 55.

The spelling of 158991135166 in words is "one hundred fifty-eight billion, nine hundred ninety-one million, one hundred thirty-five thousand, one hundred sixty-six".