20818337888746 has 8 divisors (see below), whose sum is σ = 31365072943200. Its totient is φ = 10363313574348.

The previous prime is 20818337888741. The next prime is 20818337888773. The reversal of 20818337888746 is 64788873381802.

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

It is not an unprimeable number, because it can be changed into a prime (20818337888741) 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, 22927684446 + ... + 22927685353.

It is an arithmetic number, because the mean of its divisors is an integer number (3920634117900).

Almost surely, 2^{20818337888746} is an apocalyptic number.

20818337888746 is a deficient number, since it is larger than the sum of its proper divisors (10546735054454).

20818337888746 is a wasteful number, since it uses less digits than its factorization.

20818337888746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45855370028.

The product of its (nonzero) digits is 693633024, while the sum is 73.

The spelling of 20818337888746 in words is "twenty trillion, eight hundred eighteen billion, three hundred thirty-seven million, eight hundred eighty-eight thousand, seven hundred forty-six".