20823984798 has 8 divisors (see below), whose sum is σ = 41647969608. Its totient is φ = 6941328264.

The previous prime is 20823984791. The next prime is 20823984809. The reversal of 20823984798 is 89748932802.

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

20823984798 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20823984791) 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, 1735332061 + ... + 1735332072.

It is an arithmetic number, because the mean of its divisors is an integer number (5205996201).

Almost surely, 2^20823984798 is an apocalyptic number.

20823984798 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20823984798 is a wasteful number, since it uses less digits than its factorization.

20823984798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3470664138.

The product of its (nonzero) digits is 13934592, while the sum is 60.

The spelling of 20823984798 in words is "twenty billion, eight hundred twenty-three million, nine hundred eighty-four thousand, seven hundred ninety-eight".