195631537240 has 128 divisors (see below), whose sum is σ = 456369163200. Its totient is φ = 75435909120.

The previous prime is 195631537237. The next prime is 195631537271. The reversal of 195631537240 is 42735136591.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30751660 + ... + 30758020.

Almost surely, 2^195631537240 is an apocalyptic number.

195631537240 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 195631537240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228184581600).

195631537240 is an abundant number, since it is smaller than the sum of its proper divisors (260737625960).

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

195631537240 is a wasteful number, since it uses less digits than its factorization.

195631537240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6677 (or 6673 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 46.

The spelling of 195631537240 in words is "one hundred ninety-five billion, six hundred thirty-one million, five hundred thirty-seven thousand, two hundred forty".