28534964663 has 4 divisors (see below), whose sum is σ = 28653367248. Its totient is φ = 28416562080.

The previous prime is 28534964659. The next prime is 28534964707. The reversal of 28534964663 is 36646943582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36646943582 = 2 ⋅18323471791.

It is a cyclic number.

It is not a de Polignac number, because 28534964663 - 2² = 28534964659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28534964599 and 28534964608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28534964363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59200931 + ... + 59201412.

It is an arithmetic number, because the mean of its divisors is an integer number (7163341812).

Almost surely, 2^28534964663 is an apocalyptic number.

28534964663 is a deficient number, since it is larger than the sum of its proper divisors (118402585).

28534964663 is a wasteful number, since it uses less digits than its factorization.

28534964663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118402584.

The product of its digits is 22394880, while the sum is 56.

The spelling of 28534964663 in words is "twenty-eight billion, five hundred thirty-four million, nine hundred sixty-four thousand, six hundred sixty-three".