19976010119209 has 9 divisors (see below), whose sum is σ = 21220271393637. Its totient is φ = 18800879189184.

The previous prime is 19976010119201. The next prime is 19976010119249. The reversal of 19976010119209 is 90291101067991.

The square root of 19976010119209 is 4469453.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 11743540803225 + 8232469315984 = 3426885^2 + 2869228^2 .

It is not a de Polignac number, because 19976010119209 - 2³ = 19976010119201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19976010119209.

It is not an unprimeable number, because it can be changed into a prime (19976010119201) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 75849247 + ... + 76112155.

Almost surely, 2^{19976010119209} is an apocalyptic number.

19976010119209 is the 4469453-rd square number.

19976010119209 is the 2234727-th centered octagonal number.

It is an amenable number.

19976010119209 is a deficient number, since it is larger than the sum of its proper divisors (1244261274428).

19976010119209 is an frugal number, since it uses more digits than its factorization.

19976010119209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525852 (or 262926 counting only the distinct ones).

The product of its (nonzero) digits is 551124, while the sum is 55.

The spelling of 19976010119209 in words is "nineteen trillion, nine hundred seventy-six billion, ten million, one hundred nineteen thousand, two hundred nine".