20569580020 has 24 divisors (see below), whose sum is σ = 47123038368. Its totient is φ = 7479847200.

The previous prime is 20569579963. The next prime is 20569580021. The reversal of 20569580020 is 2008596502.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20569580021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46748826 + ... + 46749265.

It is an arithmetic number, because the mean of its divisors is an integer number (1963459932).

Almost surely, 2^20569580020 is an apocalyptic number.

20569580020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20569580020 is an abundant number, since it is smaller than the sum of its proper divisors (26553458348).

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

20569580020 is a wasteful number, since it uses less digits than its factorization.

20569580020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93498111 (or 93498109 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 20569580020 in words is "twenty billion, five hundred sixty-nine million, five hundred eighty thousand, twenty".