20607218080117 has 4 divisors (see below), whose sum is σ = 20610278716300. Its totient is φ = 20604157443936.

The previous prime is 20607218080103. The next prime is 20607218080151. The reversal of 20607218080117 is 71108081270602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20254086206116 + 353131874001 = 4500454^2 + 594249^2 .

It is a cyclic number.

It is not a de Polignac number, because 20607218080117 - 2³¹ = 20605070596469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20607218080417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1530307992 + ... + 1530321457.

It is an arithmetic number, because the mean of its divisors is an integer number (5152569679075).

Almost surely, 2^{20607218080117} is an apocalyptic number.

It is an amenable number.

20607218080117 is a deficient number, since it is larger than the sum of its proper divisors (3060636183).

20607218080117 is an equidigital number, since it uses as much as digits as its factorization.

20607218080117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3060636182.

The product of its (nonzero) digits is 75264, while the sum is 43.

The spelling of 20607218080117 in words is "twenty trillion, six hundred seven billion, two hundred eighteen million, eighty thousand, one hundred seventeen".