195778450560 has 512 divisors, whose sum is σ = 797029632000. Its totient is φ = 39687782400.

The previous prime is 195778450541. The next prime is 195778450631. The reversal of 195778450560 is 65054877591.

It is a self number, because there is not a number n which added to its sum of digits gives 195778450560.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6045291 + ... + 6077589.

It is an arithmetic number, because the mean of its divisors is an integer number (1556698500).

Almost surely, 2^195778450560 is an apocalyptic number.

195778450560 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 195778450560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (398514816000).

195778450560 is an abundant number, since it is smaller than the sum of its proper divisors (601251181440).

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

195778450560 is a wasteful number, since it uses less digits than its factorization.

195778450560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32380 (or 32368 counting only the distinct ones).

The product of its (nonzero) digits is 10584000, while the sum is 57.

The spelling of 195778450560 in words is "one hundred ninety-five billion, seven hundred seventy-eight million, four hundred fifty thousand, five hundred sixty".