20413105502504 has 256 divisors, whose sum is σ = 50141539123200. Its totient is φ = 7633084723200.

The previous prime is 20413105502479. The next prime is 20413105502509. The reversal of 20413105502504 is 40520550131402.

It is not an unprimeable number, because it can be changed into a prime (20413105502509) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 815500469 + ... + 815525499.

It is an arithmetic number, because the mean of its divisors is an integer number (195865387200).

Almost surely, 2^{20413105502504} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20413105502504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25070769561600).

20413105502504 is an abundant number, since it is smaller than the sum of its proper divisors (29728433620696).

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

20413105502504 is a wasteful number, since it uses less digits than its factorization.

20413105502504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27304 (or 27300 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 20413105502504 its reverse (40520550131402), we get a palindrome (60933655633906).

The spelling of 20413105502504 in words is "twenty trillion, four hundred thirteen billion, one hundred five million, five hundred two thousand, five hundred four".