199047131920 has 480 divisors, whose sum is σ = 593875418112. Its totient is φ = 60711026688.

The previous prime is 199047131917. The next prime is 199047131929. The reversal of 199047131920 is 29131740991.

It is not an unprimeable number, because it can be changed into a prime (199047131929) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 324709534 + ... + 324710146.

Almost surely, 2^199047131920 is an apocalyptic number.

199047131920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199047131920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296937709056).

199047131920 is an abundant number, since it is smaller than the sum of its proper divisors (394828286192).

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

199047131920 is a wasteful number, since it uses less digits than its factorization.

199047131920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779 (or 760 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 46.

The spelling of 199047131920 in words is "one hundred ninety-nine billion, forty-seven million, one hundred thirty-one thousand, nine hundred twenty".