195562978560 has 432 divisors, whose sum is σ = 714987471744. Its totient is φ = 51161849856.

The previous prime is 195562978553. The next prime is 195562978573. The reversal of 195562978560 is 65879265591.

195562978560 is a `hidden beast` number, since 1 + 9 + 5 + 5 + 62 + 9 + 7 + 8 + 560 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16479189 + ... + 16491051.

It is an arithmetic number, because the mean of its divisors is an integer number (1655063592).

Almost surely, 2^195562978560 is an apocalyptic number.

195562978560 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 195562978560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (357493735872).

195562978560 is an abundant number, since it is smaller than the sum of its proper divisors (519424493184).

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

195562978560 is an equidigital number, since it uses as much as digits as its factorization.

195562978560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11952 (or 11926 counting only the distinct ones).

The product of its (nonzero) digits is 40824000, while the sum is 63.

The spelling of 195562978560 in words is "one hundred ninety-five billion, five hundred sixty-two million, nine hundred seventy-eight thousand, five hundred sixty".