19889976009353 has 2 divisors, whose sum is σ = 19889976009354. Its totient is φ = 19889976009352.

The previous prime is 19889976009331. The next prime is 19889976009443. The reversal of 19889976009353 is 35390067998891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18426389004409 + 1463587004944 = 4292597^2 + 1209788^2 .

It is an emirp because it is prime and its reverse (35390067998891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19889976009353 - 2¹⁴ = 19889975992969 is a prime.

It is a super-2 number, since 2×19889976009353² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19889976009653) 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, 9944988004676 + 9944988004677.

It is an arithmetic number, because the mean of its divisors is an integer number (9944988004677).

Almost surely, 2^{19889976009353} is an apocalyptic number.

It is an amenable number.

19889976009353 is a deficient number, since it is larger than the sum of its proper divisors (1).

19889976009353 is an equidigital number, since it uses as much as digits as its factorization.

19889976009353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 793618560, while the sum is 77.

The spelling of 19889976009353 in words is "nineteen trillion, eight hundred eighty-nine billion, nine hundred seventy-six million, nine thousand, three hundred fifty-three".