195823639690000 has 225 divisors, whose sum is σ = 551541691561971. Its totient is φ = 67136175120000.

The previous prime is 195823639689929. The next prime is 195823639690013. The reversal of 195823639690000 is 96936328591.

The square root of 195823639690000 is 13993700.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 15352573351696 + 180471066338304 = 3918236^2 + 13433952^2 .

It is a super-2 number, since 2×195823639690000² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 9795580005 + ... + 9795599995.

Almost surely, 2^{195823639690000} is an apocalyptic number.

195823639690000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195823639690000 is the 13993700-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 195823639690000

195823639690000 is an abundant number, since it is smaller than the sum of its proper divisors (355718051871971).

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

195823639690000 is an frugal number, since it uses more digits than its factorization.

195823639690000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40024 (or 20005 counting only the distinct ones).

The product of its (nonzero) digits is 18895680, while the sum is 61.

The spelling of 195823639690000 in words is "one hundred ninety-five trillion, eight hundred twenty-three billion, six hundred thirty-nine million, six hundred ninety thousand".