195556828040 has 128 divisors (see below), whose sum is σ = 511670822400. Its totient is φ = 65875783680.

The previous prime is 195556828039. The next prime is 195556828067. The reversal of 195556828040 is 40828655591.

It is a super-2 number, since 2×195556828040² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16681301 + ... + 16693019.

It is an arithmetic number, because the mean of its divisors is an integer number (3997428300).

Almost surely, 2^195556828040 is an apocalyptic number.

195556828040 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 195556828040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255835411200).

195556828040 is an abundant number, since it is smaller than the sum of its proper divisors (316113994360).

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

195556828040 is a wasteful number, since it uses less digits than its factorization.

195556828040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12775 (or 12771 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 53.

The spelling of 195556828040 in words is "one hundred ninety-five billion, five hundred fifty-six million, eight hundred twenty-eight thousand, forty".