195800409556 has 6 divisors (see below), whose sum is σ = 342650716730. Its totient is φ = 97900204776.

The previous prime is 195800409529. The next prime is 195800409559. The reversal of 195800409556 is 655904008591.

It can be written as a sum of positive squares in only one way, i.e., 106841381956 + 88959027600 = 326866^2 + 298260^2 .

It is a super-2 number, since 2×195800409556² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195800409559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24475051191 + ... + 24475051198.

Almost surely, 2^195800409556 is an apocalyptic number.

It is an amenable number.

195800409556 is a deficient number, since it is larger than the sum of its proper divisors (146850307174).

195800409556 is a wasteful number, since it uses less digits than its factorization.

195800409556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48950102393 (or 48950102391 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 52.

The spelling of 195800409556 in words is "one hundred ninety-five billion, eight hundred million, four hundred nine thousand, five hundred fifty-six".