20013130020540 has 48 divisors (see below), whose sum is σ = 58986067432320. Its totient is φ = 5055948636480.

The previous prime is 20013130020509. The next prime is 20013130020577. The reversal of 20013130020540 is 4502003131002.

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 15 ways as a sum of consecutive naturals, for example, 8777687466 + ... + 8777689745.

It is an arithmetic number, because the mean of its divisors is an integer number (1228876404840).

Almost surely, 2^{20013130020540} is an apocalyptic number.

20013130020540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20013130020540 is an abundant number, since it is smaller than the sum of its proper divisors (38972937411780).

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

20013130020540 is a wasteful number, since it uses less digits than its factorization.

20013130020540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17555377242 (or 17555377240 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 20013130020540 its reverse (4502003131002), we get a palindrome (24515133151542).

The spelling of 20013130020540 in words is "twenty trillion, thirteen billion, one hundred thirty million, twenty thousand, five hundred forty".