187431823077168 has 160 divisors (see below), whose sum is σ = 491630445359872. Its totient is φ = 61527861273600.

The previous prime is 187431823077131. The next prime is 187431823077197. The reversal of 187431823077168 is 861770328134781.

It is a junction number, because it is equal to n+sod(n) for n = 187431823077099 and 187431823077108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 392032983 + ... + 392510793.

Almost surely, 2^{187431823077168} is an apocalyptic number.

It is an amenable number.

187431823077168 is an abundant number, since it is smaller than the sum of its proper divisors (304198622282704).

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

187431823077168 is a wasteful number, since it uses less digits than its factorization.

187431823077168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478443 (or 478437 counting only the distinct ones).

The product of its (nonzero) digits is 75866112, while the sum is 66.

The spelling of 187431823077168 in words is "one hundred eighty-seven trillion, four hundred thirty-one billion, eight hundred twenty-three million, seventy-seven thousand, one hundred sixty-eight".