28388363275983 has 4 divisors (see below), whose sum is σ = 37851151034648. Its totient is φ = 18925575517320.

The previous prime is 28388363275871. The next prime is 28388363276003. The reversal of 28388363275983 is 38957236388382.

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

It is not a de Polignac number, because 28388363275983 - 2¹⁰ = 28388363274959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28388363274983) 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, 4731393879328 + ... + 4731393879333.

It is an arithmetic number, because the mean of its divisors is an integer number (9462787758662).

Almost surely, 2^{28388363275983} is an apocalyptic number.

28388363275983 is a deficient number, since it is larger than the sum of its proper divisors (9462787758665).

28388363275983 is an equidigital number, since it uses as much as digits as its factorization.

28388363275983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9462787758664.

The product of its digits is 2508226560, while the sum is 75.

The spelling of 28388363275983 in words is "twenty-eight trillion, three hundred eighty-eight billion, three hundred sixty-three million, two hundred seventy-five thousand, nine hundred eighty-three".