195455803904 has 80 divisors (see below), whose sum is σ = 392349013056. Its totient is φ = 97273958400.

The previous prime is 195455803819. The next prime is 195455803909. The reversal of 195455803904 is 409308554591.

195455803904 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (195455803909) 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, 129354509 + ... + 129356019.

Almost surely, 2^195455803904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 195455803904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196174506528).

195455803904 is an abundant number, since it is smaller than the sum of its proper divisors (196893209152).

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

195455803904 is an equidigital number, since it uses as much as digits as its factorization.

195455803904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2537 (or 2521 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 53.

The spelling of 195455803904 in words is "one hundred ninety-five billion, four hundred fifty-five million, eight hundred three thousand, nine hundred four".