20513134425200 has 120 divisors (see below), whose sum is σ = 49439294651376. Its totient is φ = 8179232256000.

The previous prime is 20513134425197. The next prime is 20513134425253. The reversal of 20513134425200 is 252443131502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 202766630 + ... + 202867770.

Almost surely, 2^{20513134425200} is an apocalyptic number.

20513134425200 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 20513134425200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24719647325688).

20513134425200 is an abundant number, since it is smaller than the sum of its proper divisors (28926160226176).

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

20513134425200 is a wasteful number, since it uses less digits than its factorization.

20513134425200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102763 (or 102752 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 20513134425200 its reverse (252443131502), we get a palindrome (20765577556702).

The spelling of 20513134425200 in words is "twenty trillion, five hundred thirteen billion, one hundred thirty-four million, four hundred twenty-five thousand, two hundred".