20017002020 has 48 divisors (see below), whose sum is σ = 43039019520. Its totient is φ = 7816558464.

The previous prime is 20017001903. The next prime is 20017002029. The reversal of 20017002020 is 2020071002.

It is a junction number, because it is equal to n+sod(n) for n = 20017001986 and 20017002004.

It is not an unprimeable number, because it can be changed into a prime (20017002029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 346361 + ... + 399999.

It is an arithmetic number, because the mean of its divisors is an integer number (896646240).

Almost surely, 2^20017002020 is an apocalyptic number.

20017002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20017002020 is an abundant number, since it is smaller than the sum of its proper divisors (23022017500).

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

20017002020 is a wasteful number, since it uses less digits than its factorization.

20017002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54092 (or 54090 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 14.

Adding to 20017002020 its reverse (2020071002), we get a palindrome (22037073022).

The spelling of 20017002020 in words is "twenty billion, seventeen million, two thousand, twenty".