195620898816 has 288 divisors, whose sum is σ = 647088886080. Its totient is φ = 55771693056.

The previous prime is 195620898799. The next prime is 195620898853. The reversal of 195620898816 is 618898026591.

It is a tau number, because it is divible by the number of its divisors (288).

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72639166 + ... + 72641858.

It is an arithmetic number, because the mean of its divisors is an integer number (2246836410).

Almost surely, 2^195620898816 is an apocalyptic number.

195620898816 is a gapful number since it is divisible by the number (16) 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 195620898816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323544443040).

195620898816 is an abundant number, since it is smaller than the sum of its proper divisors (451467987264).

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

195620898816 is a wasteful number, since it uses less digits than its factorization.

195620898816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3291 (or 3268 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 63.

The spelling of 195620898816 in words is "one hundred ninety-five billion, six hundred twenty million, eight hundred ninety-eight thousand, eight hundred sixteen".