28663384716 has 18 divisors (see below), whose sum is σ = 72454667012. Its totient is φ = 9554461560.

The previous prime is 28663384693. The next prime is 28663384721. The reversal of 28663384716 is 61748336682.

28663384716 is a `hidden beast` number, since 2 + 86 + 63 + 38 + 471 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 398102530 + ... + 398102601.

Almost surely, 2^28663384716 is an apocalyptic number.

It is an amenable number.

28663384716 is an abundant number, since it is smaller than the sum of its proper divisors (43791282296).

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

28663384716 is a wasteful number, since it uses less digits than its factorization.

28663384716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796205141 (or 796205136 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 54.

The spelling of 28663384716 in words is "twenty-eight billion, six hundred sixty-three million, three hundred eighty-four thousand, seven hundred sixteen".