187843378128 has 80 divisors (see below), whose sum is σ = 568111721856. Its totient is φ = 52360519680.

The previous prime is 187843378111. The next prime is 187843378159. The reversal of 187843378128 is 821873348781.

It is a super-3 number, since 3×187843378128³ (a number of 35 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6804001 + ... + 6831552.

Almost surely, 2^187843378128 is an apocalyptic number.

It is an amenable number.

187843378128 is an abundant number, since it is smaller than the sum of its proper divisors (380268343728).

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

187843378128 is a wasteful number, since it uses less digits than its factorization.

187843378128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13635612 (or 13635606 counting only the distinct ones).

The product of its digits is 14450688, while the sum is 60.

The spelling of 187843378128 in words is "one hundred eighty-seven billion, eight hundred forty-three million, three hundred seventy-eight thousand, one hundred twenty-eight".