28318368616 has 64 divisors (see below), whose sum is σ = 55142493120. Its totient is φ = 13625041920.

The previous prime is 28318368599. The next prime is 28318368619. The reversal of 28318368616 is 61686381382.

It is not an unprimeable number, because it can be changed into a prime (28318368619) 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, 6722751 + ... + 6726961.

It is an arithmetic number, because the mean of its divisors is an integer number (861601455).

Almost surely, 2^28318368616 is an apocalyptic number.

It is an amenable number.

28318368616 is a deficient number, since it is larger than the sum of its proper divisors (26824124504).

28318368616 is a wasteful number, since it uses less digits than its factorization.

28318368616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4546 (or 4542 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 52.

The spelling of 28318368616 in words is "twenty-eight billion, three hundred eighteen million, three hundred sixty-eight thousand, six hundred sixteen".