6195978055777 has 2 divisors, whose sum is σ = 6195978055778. Its totient is φ = 6195978055776.

The previous prime is 6195978055733. The next prime is 6195978055829. The reversal of 6195978055777 is 7775508795916.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4787011429776 + 1408966626001 = 2187924^2 + 1186999^2 .

It is a cyclic number.

It is not a de Polignac number, because 6195978055777 - 2²³ = 6195969667169 is a prime.

It is not a weakly prime, because it can be changed into another prime (6195978055177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3097989027888 + 3097989027889.

It is an arithmetic number, because the mean of its divisors is an integer number (3097989027889).

Almost surely, 2^{6195978055777} is an apocalyptic number.

It is an amenable number.

6195978055777 is a deficient number, since it is larger than the sum of its proper divisors (1).

6195978055777 is an equidigital number, since it uses as much as digits as its factorization.

6195978055777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1166886000, while the sum is 76.

The spelling of 6195978055777 in words is "six trillion, one hundred ninety-five billion, nine hundred seventy-eight million, fifty-five thousand, seven hundred seventy-seven".