195099561552 has 320 divisors, whose sum is σ = 603461376000. Its totient is φ = 53139953664.

The previous prime is 195099561499. The next prime is 195099561571. The reversal of 195099561552 is 255165990591.

195099561552 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 195099561492 and 195099561501.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 383299474 + ... + 383299982.

It is an arithmetic number, because the mean of its divisors is an integer number (1885816800).

Almost surely, 2^195099561552 is an apocalyptic number.

195099561552 is a gapful number since it is divisible by the number (12) 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 195099561552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301730688000).

195099561552 is an abundant number, since it is smaller than the sum of its proper divisors (408361814448).

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

195099561552 is a wasteful number, since it uses less digits than its factorization.

195099561552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978 (or 972 counting only the distinct ones).

The product of its (nonzero) digits is 5467500, while the sum is 57.

The spelling of 195099561552 in words is "one hundred ninety-five billion, ninety-nine million, five hundred sixty-one thousand, five hundred fifty-two".