199506441920 has 56 divisors (see below), whose sum is σ = 491456624400. Its totient is φ = 77050760192.

The previous prime is 199506441913. The next prime is 199506441929. The reversal of 199506441920 is 29144605991.

199506441920 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (199506441929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10739990 + ... + 10758549.

It is an arithmetic number, because the mean of its divisors is an integer number (8776011150).

Almost surely, 2^199506441920 is an apocalyptic number.

199506441920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199506441920 is an abundant number, since it is smaller than the sum of its proper divisors (291950182480).

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

199506441920 is a wasteful number, since it uses less digits than its factorization.

199506441920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21498585 (or 21498575 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 50.

The spelling of 199506441920 in words is "one hundred ninety-nine billion, five hundred six million, four hundred forty-one thousand, nine hundred twenty".