19668674873099 has 4 divisors (see below), whose sum is σ = 22478485569264. Its totient is φ = 16858864176936.

The previous prime is 19668674873077. The next prime is 19668674873101. The reversal of 19668674873099 is 99037847686691.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19668674873099 - 2³² = 19664379905803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19668674873009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1404905348072 + ... + 1404905348085.

It is an arithmetic number, because the mean of its divisors is an integer number (5619621392316).

Almost surely, 2^{19668674873099} is an apocalyptic number.

19668674873099 is a deficient number, since it is larger than the sum of its proper divisors (2809810696165).

19668674873099 is an equidigital number, since it uses as much as digits as its factorization.

19668674873099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2809810696164.

The product of its (nonzero) digits is 5925685248, while the sum is 83.

The spelling of 19668674873099 in words is "nineteen trillion, six hundred sixty-eight billion, six hundred seventy-four million, eight hundred seventy-three thousand, ninety-nine".