195947555328 has 640 divisors, whose sum is σ = 705966243840. Its totient is φ = 52385218560.

The previous prime is 195947555327. The next prime is 195947555329. The reversal of 195947555328 is 823555749591.

195947555328 is a `hidden beast` number, since 1 + 9 + 5 + 9 + 4 + 75 + 553 + 2 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (195947555327) and next prime (195947555329).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (195947555327) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 511612225 + ... + 511612607.

It is an arithmetic number, because the mean of its divisors is an integer number (1103072256).

Almost surely, 2^195947555328 is an apocalyptic number.

195947555328 is a gapful number since it is divisible by the number (18) 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 195947555328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352983121920).

195947555328 is an abundant number, since it is smaller than the sum of its proper divisors (510018688512).

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

195947555328 is a wasteful number, since it uses less digits than its factorization.

195947555328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745 (or 723 counting only the distinct ones).

The product of its digits is 68040000, while the sum is 63.

The spelling of 195947555328 in words is "one hundred ninety-five billion, nine hundred forty-seven million, five hundred fifty-five thousand, three hundred twenty-eight".