20503594916 has 12 divisors (see below), whose sum is σ = 41007189888. Its totient is φ = 8787254952.

The previous prime is 20503594901. The next prime is 20503594967. The reversal of 20503594916 is 61949530502.

20503594916 is an admirable number.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366135596 + ... + 366135651.

It is an arithmetic number, because the mean of its divisors is an integer number (3417265824).

Almost surely, 2^20503594916 is an apocalyptic number.

It is an amenable number.

20503594916 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20503594916 is a wasteful number, since it uses less digits than its factorization.

20503594916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732271258 (or 732271256 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 44.

The spelling of 20503594916 in words is "twenty billion, five hundred three million, five hundred ninety-four thousand, nine hundred sixteen".