28080865143 has 12 divisors (see below), whose sum is σ = 40563588208. Its totient is φ = 18719497440.

The previous prime is 28080865139. The next prime is 28080865147. The reversal of 28080865143 is 34156808082.

It is an interprime number because it is at equal distance from previous prime (28080865139) and next prime (28080865147).

It is not a de Polignac number, because 28080865143 - 2² = 28080865139 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 (28080865147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94803 + ... + 255243.

Almost surely, 2^28080865143 is an apocalyptic number.

28080865143 is a deficient number, since it is larger than the sum of its proper divisors (12482723065).

28080865143 is a wasteful number, since it uses less digits than its factorization.

28080865143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179894 (or 179891 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 28080865143 in words is "twenty-eight billion, eighty million, eight hundred sixty-five thousand, one hundred forty-three".