195911921049600 has 1008 divisors, whose sum is σ = 771064376230368. Its totient is φ = 43738186383360.

The previous prime is 195911921049599. The next prime is 195911921049679. The reversal of 195911921049600 is 6940129119591.

It is a happy 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 71 ways as a sum of consecutive naturals, for example, 1294465132 + ... + 1294616468.

Almost surely, 2^{195911921049600} is an apocalyptic number.

195911921049600 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 195911921049600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (385532188115184).

195911921049600 is an abundant number, since it is smaller than the sum of its proper divisors (575152455180768).

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

195911921049600 is a wasteful number, since it uses less digits than its factorization.

195911921049600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151433 (or 151397 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 57.

The spelling of 195911921049600 in words is "one hundred ninety-five trillion, nine hundred eleven billion, nine hundred twenty-one million, forty-nine thousand, six hundred".