199853316850 has 24 divisors (see below), whose sum is σ = 405520549488. Its totient is φ = 72673933200.

The previous prime is 199853316841. The next prime is 199853316869. The reversal of 199853316850 is 58613358991.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181684284 + ... + 181685383.

It is an arithmetic number, because the mean of its divisors is an integer number (16896689562).

Almost surely, 2^199853316850 is an apocalyptic number.

199853316850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199853316850 is an abundant number, since it is smaller than the sum of its proper divisors (205667232638).

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

199853316850 is a wasteful number, since it uses less digits than its factorization.

199853316850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363369690 (or 363369685 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 58.

The spelling of 199853316850 in words is "one hundred ninety-nine billion, eight hundred fifty-three million, three hundred sixteen thousand, eight hundred fifty".