20404511125300 has 72 divisors (see below), whose sum is σ = 45728937660672. Its totient is φ = 7894574688000.

The previous prime is 20404511125291. The next prime is 20404511125319. The reversal of 20404511125300 is 352111540402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4566240 + ... + 7852360.

It is an arithmetic number, because the mean of its divisors is an integer number (635124134176).

Almost surely, 2^{20404511125300} is an apocalyptic number.

20404511125300 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 20404511125300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22864468830336).

20404511125300 is an abundant number, since it is smaller than the sum of its proper divisors (25324426535372).

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

20404511125300 is a wasteful number, since it uses less digits than its factorization.

20404511125300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3288169 (or 3288162 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 20404511125300 its reverse (352111540402), we get a palindrome (20756622665702).

The spelling of 20404511125300 in words is "twenty trillion, four hundred four billion, five hundred eleven million, one hundred twenty-five thousand, three hundred".