20063815845 has 16 divisors (see below), whose sum is σ = 32396622720. Its totient is φ = 10602529344.

The previous prime is 20063815831. The next prime is 20063815897. The reversal of 20063815845 is 54851836002.

It is not a de Polignac number, because 20063815845 - 2⁴ = 20063815829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20063815797 and 20063815806.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6134089 + ... + 6137358.

It is an arithmetic number, because the mean of its divisors is an integer number (2024788920).

Almost surely, 2^20063815845 is an apocalyptic number.

It is an amenable number.

20063815845 is a deficient number, since it is larger than the sum of its proper divisors (12332806875).

20063815845 is a wasteful number, since it uses less digits than its factorization.

20063815845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12271564.

The product of its (nonzero) digits is 230400, while the sum is 42.

The spelling of 20063815845 in words is "twenty billion, sixty-three million, eight hundred fifteen thousand, eight hundred forty-five".