20420023300017 has 64 divisors (see below), whose sum is σ = 29899253176320. Its totient is φ = 12293820748800.

The previous prime is 20420023299989. The next prime is 20420023300049. The reversal of 20420023300017 is 71000332002402.

It is not a de Polignac number, because 20420023300017 - 2⁷ = 20420023299889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20420023300017.

It is not an unprimeable number, because it can be changed into a prime (20420023300517) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8700477438 + ... + 8700479784.

It is an arithmetic number, because the mean of its divisors is an integer number (467175830880).

Almost surely, 2^{20420023300017} is an apocalyptic number.

It is an amenable number.

20420023300017 is a deficient number, since it is larger than the sum of its proper divisors (9479229876303).

20420023300017 is a wasteful number, since it uses less digits than its factorization.

20420023300017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4854.

The product of its (nonzero) digits is 2016, while the sum is 24.

Adding to 20420023300017 its reverse (71000332002402), we get a palindrome (91420355302419).

The spelling of 20420023300017 in words is "twenty trillion, four hundred twenty billion, twenty-three million, three hundred thousand, seventeen".