19497245884793 has 2 divisors, whose sum is σ = 19497245884794. Its totient is φ = 19497245884792.

The previous prime is 19497245884757. The next prime is 19497245884807. The reversal of 19497245884793 is 39748854279491.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19232198015209 + 265047869584 = 4385453^2 + 514828^2 .

It is a cyclic number.

It is not a de Polignac number, because 19497245884793 - 2¹⁸ = 19497245622649 is a prime.

It is not a weakly prime, because it can be changed into another prime (19497245880793) 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, 9748622942396 + 9748622942397.

It is an arithmetic number, because the mean of its divisors is an integer number (9748622942397).

Almost surely, 2^{19497245884793} is an apocalyptic number.

It is an amenable number.

19497245884793 is a deficient number, since it is larger than the sum of its proper divisors (1).

19497245884793 is an equidigital number, since it uses as much as digits as its factorization.

19497245884793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4389396480, while the sum is 80.

The spelling of 19497245884793 in words is "nineteen trillion, four hundred ninety-seven billion, two hundred forty-five million, eight hundred eighty-four thousand, seven hundred ninety-three".