20555304000 has 896 divisors, whose sum is σ = 86729011200. Its totient is φ = 4252416000.

The previous prime is 20555303999. The next prime is 20555304041. The reversal of 20555304000 is 40355502.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 90551887 + ... + 90552113.

Almost surely, 2^20555304000 is an apocalyptic number.

20555304000 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 20555304000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43364505600).

20555304000 is an abundant number, since it is smaller than the sum of its proper divisors (66173707200).

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

20555304000 is a wasteful number, since it uses less digits than its factorization.

20555304000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 24.

Adding to 20555304000 its reverse (40355502), we get a palindrome (20595659502).

The spelling of 20555304000 in words is "twenty billion, five hundred fifty-five million, three hundred four thousand".