20500516216 has 64 divisors (see below), whose sum is σ = 40642560000. Its totient is φ = 9674953728.

The previous prime is 20500516207. The next prime is 20500516217. The reversal of 20500516216 is 61261500502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20500516217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6834285 + ... + 6837283.

It is an arithmetic number, because the mean of its divisors is an integer number (635040000).

Almost surely, 2^20500516216 is an apocalyptic number.

It is an amenable number.

20500516216 is a deficient number, since it is larger than the sum of its proper divisors (20142043784).

20500516216 is a wasteful number, since it uses less digits than its factorization.

20500516216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3508 (or 3504 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 20500516216 in words is "twenty billion, five hundred million, five hundred sixteen thousand, two hundred sixteen".