20798353798 has 8 divisors (see below), whose sum is σ = 31226077008. Its totient is φ = 10389661464.

The previous prime is 20798353733. The next prime is 20798353799. The reversal of 20798353798 is 89735389702.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20798353799) 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 3 ways as a sum of consecutive naturals, for example, 4754986 + ... + 4759357.

It is an arithmetic number, because the mean of its divisors is an integer number (3903259626).

Almost surely, 2^20798353798 is an apocalyptic number.

20798353798 is a deficient number, since it is larger than the sum of its proper divisors (10427723210).

20798353798 is a wasteful number, since it uses less digits than its factorization.

20798353798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9515438.

The product of its (nonzero) digits is 22861440, while the sum is 61.

The spelling of 20798353798 in words is "twenty billion, seven hundred ninety-eight million, three hundred fifty-three thousand, seven hundred ninety-eight".