20073655568 has 10 divisors (see below), whose sum is σ = 38892707694. Its totient is φ = 10036827776.

The previous prime is 20073655561. The next prime is 20073655661. The reversal of 20073655568 is 86555637002.

It can be written as a sum of positive squares in only one way, i.e., 12785277184 + 7288378384 = 113072^2 + 85372^2 .

It is not an unprimeable number, because it can be changed into a prime (20073655561) 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 as a sum of consecutive naturals, namely, 627301721 + ... + 627301752.

Almost surely, 2^20073655568 is an apocalyptic number.

It is an amenable number.

20073655568 is a deficient number, since it is larger than the sum of its proper divisors (18819052126).

20073655568 is a wasteful number, since it uses less digits than its factorization.

20073655568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254603481 (or 1254603475 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 47.

The spelling of 20073655568 in words is "twenty billion, seventy-three million, six hundred fifty-five thousand, five hundred sixty-eight".