20369616016 has 20 divisors (see below), whose sum is σ = 39472715772. Its totient is φ = 10183108736.

The previous prime is 20369615963. The next prime is 20369616061. The reversal of 20369616016 is 61061696302.

It can be written as a sum of positive squares in 2 ways, for example, as 10608176016 + 9761440000 = 102996^2 + 98800^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20369616016.

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, 4351 + ... + 201886.

Almost surely, 2^20369616016 is an apocalyptic number.

It is an amenable number.

20369616016 is a deficient number, since it is larger than the sum of its proper divisors (19103099756).

20369616016 is a wasteful number, since it uses less digits than its factorization.

20369616016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212418 (or 212412 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 40.

The spelling of 20369616016 in words is "twenty billion, three hundred sixty-nine million, six hundred sixteen thousand, sixteen".