195354817020 has 216 divisors, whose sum is σ = 651878424288. Its totient is φ = 47319909120.

The previous prime is 195354817013. The next prime is 195354817037. The reversal of 195354817020 is 20718453591.

195354817020 is a `hidden beast` number, since 1 + 9 + 535 + 48 + 1 + 70 + 2 + 0 = 666.

It is a super-3 number, since 3×195354817020³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 33603634 + ... + 33609446.

It is an arithmetic number, because the mean of its divisors is an integer number (3017955668).

Almost surely, 2^195354817020 is an apocalyptic number.

195354817020 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 195354817020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325939212144).

195354817020 is an abundant number, since it is smaller than the sum of its proper divisors (456523607268).

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

195354817020 is a wasteful number, since it uses less digits than its factorization.

195354817020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7393 (or 7377 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 195354817020 in words is "one hundred ninety-five billion, three hundred fifty-four million, eight hundred seventeen thousand, twenty".