195638855160 has 128 divisors (see below), whose sum is σ = 672662983680. Its totient is φ = 44590706688.

The previous prime is 195638855149. The next prime is 195638855189. The reversal of 195638855160 is 61558836591.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 195638855160.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33372 + ... + 626411.

It is an arithmetic number, because the mean of its divisors is an integer number (5255179560).

Almost surely, 2^195638855160 is an apocalyptic number.

195638855160 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 195638855160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336331491840).

195638855160 is an abundant number, since it is smaller than the sum of its proper divisors (477024128520).

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

195638855160 is a wasteful number, since it uses less digits than its factorization.

195638855160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660157 (or 660153 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 57.

The spelling of 195638855160 in words is "one hundred ninety-five billion, six hundred thirty-eight million, eight hundred fifty-five thousand, one hundred sixty".