195105659904 has 352 divisors, whose sum is σ = 611741856000. Its totient is φ = 61321494528.

The previous prime is 195105659831. The next prime is 195105659909. The reversal of 195105659904 is 409956501591.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195105659909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34474227 + ... + 34479885.

It is an arithmetic number, because the mean of its divisors is an integer number (1737903000).

Almost surely, 2^195105659904 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 195105659904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305870928000).

195105659904 is an abundant number, since it is smaller than the sum of its proper divisors (416636196096).

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

195105659904 is a wasteful number, since it uses less digits than its factorization.

195105659904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5760 (or 5736 counting only the distinct ones).

The product of its (nonzero) digits is 2187000, while the sum is 54.

The spelling of 195105659904 in words is "one hundred ninety-five billion, one hundred five million, six hundred fifty-nine thousand, nine hundred four".