28081468875 has 64 divisors (see below), whose sum is σ = 47982025728. Its totient is φ = 14576480000.

The previous prime is 28081468873. The next prime is 28081468879. The reversal of 28081468875 is 57886418082.

It is not a de Polignac number, because 28081468875 - 2¹ = 28081468873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28081468873) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7178170 + ... + 7182080.

It is an arithmetic number, because the mean of its divisors is an integer number (749719152).

Almost surely, 2^28081468875 is an apocalyptic number.

28081468875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28081468875 is a deficient number, since it is larger than the sum of its proper divisors (19900556853).

28081468875 is a wasteful number, since it uses less digits than its factorization.

28081468875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4437 (or 4427 counting only the distinct ones).

The product of its (nonzero) digits is 6881280, while the sum is 57.

The spelling of 28081468875 in words is "twenty-eight billion, eighty-one million, four hundred sixty-eight thousand, eight hundred seventy-five".