195321023040 has 448 divisors, whose sum is σ = 729869398272. Its totient is φ = 43629772800.

The previous prime is 195321022999. The next prime is 195321023057. The reversal of 195321023040 is 40320123591.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 195321022989 and 195321023007.

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, 112706014 + ... + 112707746.

It is an arithmetic number, because the mean of its divisors is an integer number (1629172764).

Almost surely, 2^195321023040 is an apocalyptic number.

195321023040 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 195321023040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364934699136).

195321023040 is an abundant number, since it is smaller than the sum of its proper divisors (534548375232).

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

195321023040 is a wasteful number, since it uses less digits than its factorization.

195321023040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2598 (or 2588 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The spelling of 195321023040 in words is "one hundred ninety-five billion, three hundred twenty-one million, twenty-three thousand, forty".