195081697860 has 288 divisors, whose sum is σ = 642863692800. Its totient is φ = 44070147072.

The previous prime is 195081697841. The next prime is 195081697861. The reversal of 195081697860 is 68796180591.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 195081697794 and 195081697803.

It is not an unprimeable number, because it can be changed into a prime (195081697861) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 97686382 + ... + 97688378.

It is an arithmetic number, because the mean of its divisors is an integer number (2232165600).

Almost surely, 2^195081697860 is an apocalyptic number.

195081697860 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 195081697860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321431846400).

195081697860 is an abundant number, since it is smaller than the sum of its proper divisors (447781994940).

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

195081697860 is a wasteful number, since it uses less digits than its factorization.

195081697860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2395 (or 2386 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 60.

The spelling of 195081697860 in words is "one hundred ninety-five billion, eighty-one million, six hundred ninety-seven thousand, eight hundred sixty".