28663643483 has 4 divisors (see below), whose sum is σ = 28672104720. Its totient is φ = 28655182248.

The previous prime is 28663643473. The next prime is 28663643497. The reversal of 28663643483 is 38434636682.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28663643483 - 2⁴ = 28663643467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28663643443) 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, 4225535 + ... + 4232312.

It is an arithmetic number, because the mean of its divisors is an integer number (7168026180).

Almost surely, 2^28663643483 is an apocalyptic number.

28663643483 is a deficient number, since it is larger than the sum of its proper divisors (8461237).

28663643483 is an equidigital number, since it uses as much as digits as its factorization.

28663643483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8461236.

The product of its digits is 11943936, while the sum is 53.

The spelling of 28663643483 in words is "twenty-eight billion, six hundred sixty-three million, six hundred forty-three thousand, four hundred eighty-three".