195111072000 has 1152 divisors, whose sum is σ = 803537280000. Its totient is φ = 46293811200.

The previous prime is 195111071999. The next prime is 195111072017. The reversal of 195111072000 is 270111591.

It is a tau number, because it is divible by the number of its divisors (1152).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 325727701 + ... + 325728299.

It is an arithmetic number, because the mean of its divisors is an integer number (697515000).

Almost surely, 2^195111072000 is an apocalyptic number.

195111072000 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 195111072000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (401768640000).

195111072000 is an abundant number, since it is smaller than the sum of its proper divisors (608426208000).

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

195111072000 is a wasteful number, since it uses less digits than its factorization.

195111072000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681 (or 651 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 27.

Adding to 195111072000 its reverse (270111591), we get a palindrome (195381183591).

The spelling of 195111072000 in words is "one hundred ninety-five billion, one hundred eleven million, seventy-two thousand".