20593365816 has 32 divisors (see below), whose sum is σ = 52454802960. Its totient is φ = 6734936832.

The previous prime is 20593365799. The next prime is 20593365817. The reversal of 20593365816 is 61856339502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20593365817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8093605 + ... + 8096148.

Almost surely, 2^20593365816 is an apocalyptic number.

It is an amenable number.

20593365816 is an abundant number, since it is smaller than the sum of its proper divisors (31861437144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20593365816 is a wasteful number, since it uses less digits than its factorization.

20593365816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16189815 (or 16189811 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 48.

The spelling of 20593365816 in words is "twenty billion, five hundred ninety-three million, three hundred sixty-five thousand, eight hundred sixteen".