195128585112840 has 128 divisors (see below), whose sum is σ = 599669500348800. Its totient is φ = 50764648724480.

The previous prime is 195128585112827. The next prime is 195128585112911. The reversal of 195128585112840 is 48211585821591.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

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, 900541954 + ... + 900758606.

It is an arithmetic number, because the mean of its divisors is an integer number (4684917971475).

Almost surely, 2^{195128585112840} is an apocalyptic number.

195128585112840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195128585112840 is an abundant number, since it is smaller than the sum of its proper divisors (404540915235960).

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

195128585112840 is a wasteful number, since it uses less digits than its factorization.

195128585112840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399767 (or 399763 counting only the distinct ones).

The product of its (nonzero) digits is 9216000, while the sum is 60.

The spelling of 195128585112840 in words is "one hundred ninety-five trillion, one hundred twenty-eight billion, five hundred eighty-five million, one hundred twelve thousand, eight hundred forty".