20798353800 has 960 divisors, whose sum is σ = 89123760000. Its totient is φ = 4480842240.

The previous prime is 20798353799. The next prime is 20798353811. The reversal of 20798353800 is 835389702.

20798353800 is a `hidden beast` number, since 20 + 7 + 98 + 3 + 538 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 105575302 + ... + 105575498.

It is an arithmetic number, because the mean of its divisors is an integer number (92837250).

Almost surely, 2^20798353800 is an apocalyptic number.

20798353800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20798353800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44561880000).

20798353800 is an abundant number, since it is smaller than the sum of its proper divisors (68325406200).

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

20798353800 is a wasteful number, since it uses less digits than its factorization.

20798353800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 20798353800 in words is "twenty billion, seven hundred ninety-eight million, three hundred fifty-three thousand, eight hundred".