6673421519999 has 4 divisors (see below), whose sum is σ = 7186761636936. Its totient is φ = 6160081403064.

The previous prime is 6673421519881. The next prime is 6673421520013. The reversal of 6673421519999 is 9999151243766.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6673421519999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6673421509999) 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, 256670058449 + ... + 256670058474.

It is an arithmetic number, because the mean of its divisors is an integer number (1796690409234).

Almost surely, 2^{6673421519999} is an apocalyptic number.

6673421519999 is a deficient number, since it is larger than the sum of its proper divisors (513340116937).

6673421519999 is a wasteful number, since it uses less digits than its factorization.

6673421519999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513340116936.

The product of its digits is 198404640, while the sum is 71.

The spelling of 6673421519999 in words is "six trillion, six hundred seventy-three billion, four hundred twenty-one million, five hundred nineteen thousand, nine hundred ninety-nine".