1662103136497 has 2 divisors, whose sum is σ = 1662103136498. Its totient is φ = 1662103136496.

The previous prime is 1662103136429. The next prime is 1662103136527. The reversal of 1662103136497 is 7946313012661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1312161086016 + 349942050481 = 1145496^2 + 591559^2 .

It is an emirp because it is prime and its reverse (7946313012661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1662103136497 - 2¹¹ = 1662103134449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1662103136497.

It is not a weakly prime, because it can be changed into another prime (1662103116497) 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, 831051568248 + 831051568249.

It is an arithmetic number, because the mean of its divisors is an integer number (831051568249).

Almost surely, 2^{1662103136497} is an apocalyptic number.

It is an amenable number.

1662103136497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1662103136497 is an equidigital number, since it uses as much as digits as its factorization.

1662103136497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 49.

The spelling of 1662103136497 in words is "one trillion, six hundred sixty-two billion, one hundred three million, one hundred thirty-six thousand, four hundred ninety-seven".