10199976209 has 2 divisors, whose sum is σ = 10199976210. Its totient is φ = 10199976208.

The previous prime is 10199976181. The next prime is 10199976223. The reversal of 10199976209 is 90267999101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10144518400 + 55457809 = 100720^2 + 7447^2 .

It is a cyclic number.

It is not a de Polignac number, because 10199976209 - 2²⁰ = 10198927633 is a prime.

It is not a weakly prime, because it can be changed into another prime (10199976239) 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, 5099988104 + 5099988105.

It is an arithmetic number, because the mean of its divisors is an integer number (5099988105).

Almost surely, 2^10199976209 is an apocalyptic number.

It is an amenable number.

10199976209 is a deficient number, since it is larger than the sum of its proper divisors (1).

10199976209 is an equidigital number, since it uses as much as digits as its factorization.

10199976209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 551124, while the sum is 53.

The spelling of 10199976209 in words is "ten billion, one hundred ninety-nine million, nine hundred seventy-six thousand, two hundred nine".