28320625171 has 16 divisors (see below), whose sum is σ = 29034455040. Its totient is φ = 27611680320.

The previous prime is 28320625169. The next prime is 28320625187. The reversal of 28320625171 is 17152602382.

It is not a de Polignac number, because 28320625171 - 2¹ = 28320625169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28320625171.

It is not an unprimeable number, because it can be changed into a prime (28320625871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25084135 + ... + 25085263.

It is an arithmetic number, because the mean of its divisors is an integer number (1814653440).

Almost surely, 2^28320625171 is an apocalyptic number.

28320625171 is a deficient number, since it is larger than the sum of its proper divisors (713829869).

28320625171 is a wasteful number, since it uses less digits than its factorization.

28320625171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2754.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 28320625171 in words is "twenty-eight billion, three hundred twenty million, six hundred twenty-five thousand, one hundred seventy-one".