195681212207 has 8 divisors (see below), whose sum is σ = 216429116736. Its totient is φ = 175746951072.

The previous prime is 195681212201. The next prime is 195681212219. The reversal of 195681212207 is 702212186591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 195681212207 - 2⁴ = 195681212191 is a prime.

It is a super-2 number, since 2×195681212207² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195681212201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203410343 + ... + 203411304.

It is an arithmetic number, because the mean of its divisors is an integer number (27053639592).

Almost surely, 2^195681212207 is an apocalyptic number.

195681212207 is a deficient number, since it is larger than the sum of its proper divisors (20747904529).

195681212207 is a wasteful number, since it uses less digits than its factorization.

195681212207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406821697.

The product of its (nonzero) digits is 120960, while the sum is 44.

Adding to 195681212207 its reverse (702212186591), we get a palindrome (897893398798).

The spelling of 195681212207 in words is "one hundred ninety-five billion, six hundred eighty-one million, two hundred twelve thousand, two hundred seven".