131278812158 has 8 divisors (see below), whose sum is σ = 212065773528. Its totient is φ = 60590220984.

The previous prime is 131278812109. The next prime is 131278812163. The reversal of 131278812158 is 851218872131.

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

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2524592516 + ... + 2524592567.

It is an arithmetic number, because the mean of its divisors is an integer number (26508221691).

Almost surely, 2^131278812158 is an apocalyptic number.

131278812158 is a deficient number, since it is larger than the sum of its proper divisors (80786961370).

131278812158 is a wasteful number, since it uses less digits than its factorization.

131278812158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5049185098.

The product of its digits is 215040, while the sum is 47.

The spelling of 131278812158 in words is "one hundred thirty-one billion, two hundred seventy-eight million, eight hundred twelve thousand, one hundred fifty-eight".