195820012201800 has 384 divisors, whose sum is σ = 706604774400000. Its totient is φ = 43937551595520.

The previous prime is 195820012201789. The next prime is 195820012201843. The reversal of 195820012201800 is 8102210028591.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 50073801 + ... + 53842599.

It is an arithmetic number, because the mean of its divisors is an integer number (1840116600000).

Almost surely, 2^{195820012201800} is an apocalyptic number.

195820012201800 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 195820012201800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353302387200000).

195820012201800 is an abundant number, since it is smaller than the sum of its proper divisors (510784762198200).

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

195820012201800 is a wasteful number, since it uses less digits than its factorization.

195820012201800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3769053 (or 3769044 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 39.

The spelling of 195820012201800 in words is "one hundred ninety-five trillion, eight hundred twenty billion, twelve million, two hundred one thousand, eight hundred".