11819872903209 has 8 divisors (see below), whose sum is σ = 18011234900160. Its totient is φ = 6754213087536.

The previous prime is 11819872903187. The next prime is 11819872903211. The reversal of 11819872903209 is 90230927891811.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11819872903209 - 2⁷ = 11819872903081 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11819872904209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281425545294 + ... + 281425545335.

It is an arithmetic number, because the mean of its divisors is an integer number (2251404362520).

Almost surely, 2^{11819872903209} is an apocalyptic number.

It is an amenable number.

11819872903209 is a deficient number, since it is larger than the sum of its proper divisors (6191361996951).

11819872903209 is an equidigital number, since it uses as much as digits as its factorization.

11819872903209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562851090639.

The product of its (nonzero) digits is 3919104, while the sum is 60.

The spelling of 11819872903209 in words is "eleven trillion, eight hundred nineteen billion, eight hundred seventy-two million, nine hundred three thousand, two hundred nine".