995109197720 has 256 divisors, whose sum is σ = 2659755916800. Its totient is φ = 331009269760.

The previous prime is 995109197717. The next prime is 995109197791. The reversal of 995109197720 is 27791901599.

995109197720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 995109197720.

It is a congruent number.

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, 42407351 + ... + 42430809.

It is an arithmetic number, because the mean of its divisors is an integer number (10389671550).

Almost surely, 2^995109197720 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 995109197720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1329877958400).

995109197720 is an abundant number, since it is smaller than the sum of its proper divisors (1664646719080).

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

995109197720 is a wasteful number, since it uses less digits than its factorization.

995109197720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23658 (or 23654 counting only the distinct ones).

The product of its (nonzero) digits is 3214890, while the sum is 59.

The spelling of 995109197720 in words is "nine hundred ninety-five billion, one hundred nine million, one hundred ninety-seven thousand, seven hundred twenty".