20900484000 has 768 divisors, whose sum is σ = 84479915520. Its totient is φ = 4976640000.

The previous prime is 20900483977. The next prime is 20900484013. The reversal of 20900484000 is 48400902.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 86723880 + ... + 86724120.

It is an arithmetic number, because the mean of its divisors is an integer number (109999890).

Almost surely, 2^20900484000 is an apocalyptic number.

20900484000 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 20900484000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42239957760).

20900484000 is an abundant number, since it is smaller than the sum of its proper divisors (63579431520).

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

20900484000 is a wasteful number, since it uses less digits than its factorization.

20900484000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 20900484000 its reverse (48400902), we get a palindrome (20948884902).

The spelling of 20900484000 in words is "twenty billion, nine hundred million, four hundred eighty-four thousand".