20306727685 has 8 divisors (see below), whose sum is σ = 24422347800. Its totient is φ = 16209199104.

The previous prime is 20306727677. The next prime is 20306727689. The reversal of 20306727685 is 58672760302.

It can be written as a sum of positive squares in 4 ways, for example, as 407111329 + 19899616356 = 20177^2 + 141066^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20306727685 - 2³ = 20306727677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20306727689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4520412 + ... + 4524901.

It is an arithmetic number, because the mean of its divisors is an integer number (3052793475).

Almost surely, 2^20306727685 is an apocalyptic number.

It is an amenable number.

20306727685 is a deficient number, since it is larger than the sum of its proper divisors (4115620115).

20306727685 is an equidigital number, since it uses as much as digits as its factorization.

20306727685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9045767.

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 20306727685 in words is "twenty billion, three hundred six million, seven hundred twenty-seven thousand, six hundred eighty-five".