1973542699559 has 2 divisors, whose sum is σ = 1973542699560. Its totient is φ = 1973542699558.

The previous prime is 1973542699487. The next prime is 1973542699589. The reversal of 1973542699559 is 9559962453791.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1973542699559 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1973542699589) 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, 986771349779 + 986771349780.

It is an arithmetic number, because the mean of its divisors is an integer number (986771349780).

Almost surely, 2^{1973542699559} is an apocalyptic number.

1973542699559 is a deficient number, since it is larger than the sum of its proper divisors (1).

1973542699559 is an equidigital number, since it uses as much as digits as its factorization.

1973542699559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 826686000, while the sum is 74.

The spelling of 1973542699559 in words is "one trillion, nine hundred seventy-three billion, five hundred forty-two million, six hundred ninety-nine thousand, five hundred fifty-nine".