16195765447 has 2 divisors, whose sum is σ = 16195765448. Its totient is φ = 16195765446.

The previous prime is 16195765381. The next prime is 16195765489. The reversal of 16195765447 is 74456759161.

It is a strong prime.

It is an emirp because it is prime and its reverse (74456759161) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16195765447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16195765247) 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 as a sum of consecutive naturals, namely, 8097882723 + 8097882724.

It is an arithmetic number, because the mean of its divisors is an integer number (8097882724).

Almost surely, 2^16195765447 is an apocalyptic number.

16195765447 is a deficient number, since it is larger than the sum of its proper divisors (1).

16195765447 is an equidigital number, since it uses as much as digits as its factorization.

16195765447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6350400, while the sum is 55.

The spelling of 16195765447 in words is "sixteen billion, one hundred ninety-five million, seven hundred sixty-five thousand, four hundred forty-seven".