28327775503 has 4 divisors (see below), whose sum is σ = 28328743800. Its totient is φ = 28326807208.

The previous prime is 28327775477. The next prime is 28327775513. The reversal of 28327775503 is 30557772382.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30557772382 = 2 ⋅15278886191.

It is a cyclic number.

It is not a de Polignac number, because 28327775503 - 2⁵ = 28327775471 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 (28327775513) 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, 438853 + ... + 499246.

It is an arithmetic number, because the mean of its divisors is an integer number (7082185950).

Almost surely, 2^28327775503 is an apocalyptic number.

28327775503 is a deficient number, since it is larger than the sum of its proper divisors (968297).

28327775503 is an equidigital number, since it uses as much as digits as its factorization.

28327775503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968296.

The product of its (nonzero) digits is 2469600, while the sum is 49.

The spelling of 28327775503 in words is "twenty-eight billion, three hundred twenty-seven million, seven hundred seventy-five thousand, five hundred three".