195666023520 has 960 divisors, whose sum is σ = 785347073280. Its totient is φ = 45461606400.

The previous prime is 195666023491. The next prime is 195666023533. The reversal of 195666023520 is 25320666591.

It is a super-3 number, since 3×195666023520³ (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 (17) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 361674450 + ... + 361674990.

It is an arithmetic number, because the mean of its divisors is an integer number (818069868).

Almost surely, 2^195666023520 is an apocalyptic number.

195666023520 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 195666023520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (392673536640).

195666023520 is an abundant number, since it is smaller than the sum of its proper divisors (589681049760).

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

195666023520 is a wasteful number, since it uses less digits than its factorization.

195666023520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681 (or 664 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The spelling of 195666023520 in words is "one hundred ninety-five billion, six hundred sixty-six million, twenty-three thousand, five hundred twenty".