199887873174 has 72 divisors (see below), whose sum is σ = 488335988280. Its totient is φ = 60561131400.

The previous prime is 199887873169. The next prime is 199887873203. The reversal of 199887873174 is 471378788991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 36136789 + ... + 36142319.

Almost surely, 2^199887873174 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199887873174, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244167994140).

199887873174 is an abundant number, since it is smaller than the sum of its proper divisors (288448115106).

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

199887873174 is an frugal number, since it uses more digits than its factorization.

199887873174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11095 (or 5547 counting only the distinct ones).

The product of its digits is 170698752, while the sum is 72.

The spelling of 199887873174 in words is "one hundred ninety-nine billion, eight hundred eighty-seven million, eight hundred seventy-three thousand, one hundred seventy-four".