20873424189 has 8 divisors (see below), whose sum is σ = 27843851520. Its totient is φ = 13909306496.

The previous prime is 20873424181. The next prime is 20873424199. The reversal of 20873424189 is 98142437802.

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

It is a cyclic number.

It is not a de Polignac number, because 20873424189 - 2³ = 20873424181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20873424181) 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 in 7 ways as a sum of consecutive naturals, for example, 1569684 + ... + 1582925.

It is an arithmetic number, because the mean of its divisors is an integer number (3480481440).

Almost surely, 2^20873424189 is an apocalyptic number.

It is an amenable number.

20873424189 is a deficient number, since it is larger than the sum of its proper divisors (6970427331).

20873424189 is a wasteful number, since it uses less digits than its factorization.

20873424189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3154819.

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 20873424189 in words is "twenty billion, eight hundred seventy-three million, four hundred twenty-four thousand, one hundred eighty-nine".