195845069447 has 4 divisors (see below), whose sum is σ = 197387156736. Its totient is φ = 194302982160.

The previous prime is 195845069429. The next prime is 195845069461. The reversal of 195845069447 is 744960548591.

195845069447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195845069447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 195845069447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195845069467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 771043454 + ... + 771043707.

It is an arithmetic number, because the mean of its divisors is an integer number (49346789184).

Almost surely, 2^195845069447 is an apocalyptic number.

195845069447 is a deficient number, since it is larger than the sum of its proper divisors (1542087289).

195845069447 is a wasteful number, since it uses less digits than its factorization.

195845069447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542087288.

The product of its (nonzero) digits is 43545600, while the sum is 62.

The spelling of 195845069447 in words is "one hundred ninety-five billion, eight hundred forty-five million, sixty-nine thousand, four hundred forty-seven".