20557230002504 has 96 divisors (see below), whose sum is σ = 44056319335200. Its totient is φ = 8988582343104.

The previous prime is 20557230002489. The next prime is 20557230002531. The reversal of 20557230002504 is 40520003275502.

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, 8164967 + ... + 10381769.

It is an arithmetic number, because the mean of its divisors is an integer number (458919993075).

Almost surely, 2^{20557230002504} 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 20557230002504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22028159667600).

20557230002504 is an abundant number, since it is smaller than the sum of its proper divisors (23499089332696).

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

20557230002504 is a wasteful number, since it uses less digits than its factorization.

20557230002504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216892 (or 2216837 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 35.

The spelling of 20557230002504 in words is "twenty trillion, five hundred fifty-seven billion, two hundred thirty million, two thousand, five hundred four".