20306910608 has 20 divisors (see below), whose sum is σ = 39346893468. Its totient is φ = 10152873600.

The previous prime is 20306910607. The next prime is 20306910629. The reversal of 20306910608 is 80601960302.

It can be written as a sum of positive squares in 2 ways, for example, as 5995095184 + 14311815424 = 77428^2 + 119632^2 .

It is not an unprimeable number, because it can be changed into a prime (20306910607) 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, 443810 + ... + 487422.

Almost surely, 2^20306910608 is an apocalyptic number.

It is an amenable number.

20306910608 is a deficient number, since it is larger than the sum of its proper divisors (19039982860).

20306910608 is a wasteful number, since it uses less digits than its factorization.

20306910608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72722 (or 72716 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 20306910608 in words is "twenty billion, three hundred six million, nine hundred ten thousand, six hundred eight".