20844700798 has 4 divisors (see below), whose sum is σ = 31267051200. Its totient is φ = 10422350398.

The previous prime is 20844700753. The next prime is 20844700847. The reversal of 20844700798 is 89700744802.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89700744802 = 2 ⋅44850372401.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5211175198 + ... + 5211175201.

It is an arithmetic number, because the mean of its divisors is an integer number (7816762800).

Almost surely, 2^20844700798 is an apocalyptic number.

20844700798 is a deficient number, since it is larger than the sum of its proper divisors (10422350402).

20844700798 is a wasteful number, since it uses less digits than its factorization.

20844700798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10422350401.

The product of its (nonzero) digits is 903168, while the sum is 49.

The spelling of 20844700798 in words is "twenty billion, eight hundred forty-four million, seven hundred thousand, seven hundred ninety-eight".