28171545873 has 8 divisors (see below), whose sum is σ = 37572443328. Its totient is φ = 18775839504.

The previous prime is 28171545827. The next prime is 28171545877. The reversal of 28171545873 is 37854517182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28171545873 - 2⁸ = 28171545617 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28171545877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1285090 + ... + 1306827.

It is an arithmetic number, because the mean of its divisors is an integer number (4696555416).

Almost surely, 2^28171545873 is an apocalyptic number.

It is an amenable number.

28171545873 is a deficient number, since it is larger than the sum of its proper divisors (9400897455).

28171545873 is a wasteful number, since it uses less digits than its factorization.

28171545873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595543.

The product of its digits is 1881600, while the sum is 51.

The spelling of 28171545873 in words is "twenty-eight billion, one hundred seventy-one million, five hundred forty-five thousand, eight hundred seventy-three".