195503113728 has 400 divisors, whose sum is σ = 634472047440. Its totient is φ = 59575025664.

The previous prime is 195503113721. The next prime is 195503113747. The reversal of 195503113728 is 827311305591.

195503113728 is a `hidden beast` number, since 1 + 9 + 5 + 503 + 1 + 137 + 2 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195503113721) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 57685858 + ... + 57689246.

Almost surely, 2^195503113728 is an apocalyptic number.

195503113728 is a gapful number since it is divisible by the number (18) 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 195503113728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317236023720).

195503113728 is an abundant number, since it is smaller than the sum of its proper divisors (438968933712).

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

195503113728 is a wasteful number, since it uses less digits than its factorization.

195503113728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3539 (or 3514 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The spelling of 195503113728 in words is "one hundred ninety-five billion, five hundred three million, one hundred thirteen thousand, seven hundred twenty-eight".