195868663633 has 4 divisors (see below), whose sum is σ = 197770301248. Its totient is φ = 193967026020.

The previous prime is 195868663607. The next prime is 195868663657. The reversal of 195868663633 is 336366868591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 336366868591 = 13 ⋅25874374507.

It is a cyclic number.

It is not a de Polignac number, because 195868663633 - 2¹³ = 195868655441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195868663673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 950818653 + ... + 950818858.

It is an arithmetic number, because the mean of its divisors is an integer number (49442575312).

Almost surely, 2^195868663633 is an apocalyptic number.

It is an amenable number.

195868663633 is a deficient number, since it is larger than the sum of its proper divisors (1901637615).

195868663633 is a wasteful number, since it uses less digits than its factorization.

195868663633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901637614.

The product of its digits is 100776960, while the sum is 64.

The spelling of 195868663633 in words is "one hundred ninety-five billion, eight hundred sixty-eight million, six hundred sixty-three thousand, six hundred thirty-three".