28565743875 has 64 divisors (see below), whose sum is σ = 51500427264. Its totient is φ = 14005286400.

The previous prime is 28565743861. The next prime is 28565743889. The reversal of 28565743875 is 57834756582.

It is an interprime number because it is at equal distance from previous prime (28565743861) and next prime (28565743889).

It is not a de Polignac number, because 28565743875 - 2¹⁰ = 28565742851 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 222022 + ... + 326228.

It is an arithmetic number, because the mean of its divisors is an integer number (804694176).

Almost surely, 2^28565743875 is an apocalyptic number.

28565743875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28565743875 is a deficient number, since it is larger than the sum of its proper divisors (22934683389).

28565743875 is a wasteful number, since it uses less digits than its factorization.

28565743875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104285 (or 104275 counting only the distinct ones).

The product of its digits is 56448000, while the sum is 60.

The spelling of 28565743875 in words is "twenty-eight billion, five hundred sixty-five million, seven hundred forty-three thousand, eight hundred seventy-five".