1195643607791 has 2 divisors, whose sum is σ = 1195643607792. Its totient is φ = 1195643607790.

The previous prime is 1195643607761. The next prime is 1195643607869. The reversal of 1195643607791 is 1977063465911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1195643607791 - 2²² = 1195639413487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1195643607791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1195643607761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 597821803895 + 597821803896.

It is an arithmetic number, because the mean of its divisors is an integer number (597821803896).

Almost surely, 2^{1195643607791} is an apocalyptic number.

1195643607791 is a deficient number, since it is larger than the sum of its proper divisors (1).

1195643607791 is an equidigital number, since it uses as much as digits as its factorization.

1195643607791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8573040, while the sum is 59.

The spelling of 1195643607791 in words is "one trillion, one hundred ninety-five billion, six hundred forty-three million, six hundred seven thousand, seven hundred ninety-one".