20620362713 has 4 divisors (see below), whose sum is σ = 20958401508. Its totient is φ = 20282323920.

The previous prime is 20620362709. The next prime is 20620362727. The reversal of 20620362713 is 31726302602.

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 5746852864 + 14873509849 = 75808^2 + 121957^2 .

It is a cyclic number.

It is not a de Polignac number, because 20620362713 - 2² = 20620362709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20620362713.

It is not an unprimeable number, because it can be changed into a prime (20620362743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169019306 + ... + 169019427.

It is an arithmetic number, because the mean of its divisors is an integer number (5239600377).

Almost surely, 2^20620362713 is an apocalyptic number.

It is an amenable number.

20620362713 is a deficient number, since it is larger than the sum of its proper divisors (338038795).

20620362713 is an equidigital number, since it uses as much as digits as its factorization.

20620362713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338038794.

The product of its (nonzero) digits is 18144, while the sum is 32.

The spelling of 20620362713 in words is "twenty billion, six hundred twenty million, three hundred sixty-two thousand, seven hundred thirteen".