20113234210520 has 48 divisors (see below), whose sum is σ = 49742854040880. Its totient is φ = 7313903347520.

The previous prime is 20113234210519. The next prime is 20113234210591. The reversal of 20113234210520 is 2501243231102.

It is a self number, because there is not a number n which added to its sum of digits gives 20113234210520.

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 11 ways as a sum of consecutive naturals, for example, 2077808612 + ... + 2077818291.

It is an arithmetic number, because the mean of its divisors is an integer number (1036309459185).

Almost surely, 2^{20113234210520} is an apocalyptic number.

20113234210520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20113234210520 is an abundant number, since it is smaller than the sum of its proper divisors (29629619830360).

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

20113234210520 is a wasteful number, since it uses less digits than its factorization.

20113234210520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4155626936 (or 4155626921 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 20113234210520 its reverse (2501243231102), we get a palindrome (22614477441622).

The spelling of 20113234210520 in words is "twenty trillion, one hundred thirteen billion, two hundred thirty-four million, two hundred ten thousand, five hundred twenty".