195965996450 has 72 divisors (see below), whose sum is σ = 434348270244. Its totient is φ = 65549568000.

The previous prime is 195965996423. The next prime is 195965996461. The reversal of 195965996450 is 54699569591.

It can be written as a sum of positive squares in 6 ways, for example, as 22091174161 + 173874822289 = 148631^2 + 416983^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 874991 + ... + 1075890.

Almost surely, 2^195965996450 is an apocalyptic number.

195965996450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195965996450 is an abundant number, since it is smaller than the sum of its proper divisors (238382273794).

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

195965996450 is a wasteful number, since it uses less digits than its factorization.

195965996450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950948 (or 1950936 counting only the distinct ones).

The product of its (nonzero) digits is 118098000, while the sum is 68.

The spelling of 195965996450 in words is "one hundred ninety-five billion, nine hundred sixty-five million, nine hundred ninety-six thousand, four hundred fifty".