195065807904 has 384 divisors, whose sum is σ = 629959680000. Its totient is φ = 58232908800.

The previous prime is 195065807851. The next prime is 195065807917. The reversal of 195065807904 is 409708560591.

195065807904 is a `hidden beast` number, since 1 + 9 + 50 + 6 + 580 + 7 + 9 + 0 + 4 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 196836849 + ... + 196837839.

It is an arithmetic number, because the mean of its divisors is an integer number (1640520000).

Almost surely, 2^195065807904 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 195065807904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314979840000).

195065807904 is an abundant number, since it is smaller than the sum of its proper divisors (434893872096).

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

195065807904 is a wasteful number, since it uses less digits than its factorization.

195065807904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309 (or 1295 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The spelling of 195065807904 in words is "one hundred ninety-five billion, sixty-five million, eight hundred seven thousand, nine hundred four".