28063144887 has 4 divisors (see below), whose sum is σ = 37417526520. Its totient is φ = 18708763256.

The previous prime is 28063144861. The next prime is 28063144891. The reversal of 28063144887 is 78844136082.

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 28063144887 - 2¹¹ = 28063142839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28063144807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4677190812 + ... + 4677190817.

It is an arithmetic number, because the mean of its divisors is an integer number (9354381630).

Almost surely, 2^28063144887 is an apocalyptic number.

28063144887 is a deficient number, since it is larger than the sum of its proper divisors (9354381633).

28063144887 is an equidigital number, since it uses as much as digits as its factorization.

28063144887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9354381632.

The product of its (nonzero) digits is 2064384, while the sum is 51.

The spelling of 28063144887 in words is "twenty-eight billion, sixty-three million, one hundred forty-four thousand, eight hundred eighty-seven".