4194787647779 has 2 divisors, whose sum is σ = 4194787647780. Its totient is φ = 4194787647778.

The previous prime is 4194787647761. The next prime is 4194787647811. The reversal of 4194787647779 is 9777467874914.

It is a happy number.

4194787647779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4194787647779 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (4194787647719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2097393823889 + 2097393823890.

It is an arithmetic number, because the mean of its divisors is an integer number (2097393823890).

Almost surely, 2^{4194787647779} is an apocalyptic number.

4194787647779 is a deficient number, since it is larger than the sum of its proper divisors (1).

4194787647779 is an equidigital number, since it uses as much as digits as its factorization.

4194787647779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4182119424, while the sum is 80.

The spelling of 4194787647779 in words is "four trillion, one hundred ninety-four billion, seven hundred eighty-seven million, six hundred forty-seven thousand, seven hundred seventy-nine".