195890998720 has 56 divisors (see below), whose sum is σ = 467171641728. Its totient is φ = 78237772800.

The previous prime is 195890998651. The next prime is 195890998757. The reversal of 195890998720 is 27899098591.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251536 + ... + 674575.

Almost surely, 2^195890998720 is an apocalyptic number.

195890998720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195890998720 is an abundant number, since it is smaller than the sum of its proper divisors (271280643008).

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

195890998720 is an equidigital number, since it uses as much as digits as its factorization.

195890998720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926789 (or 926779 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 67.

The spelling of 195890998720 in words is "one hundred ninety-five billion, eight hundred ninety million, nine hundred ninety-eight thousand, seven hundred twenty".