28107523171 has 16 divisors (see below), whose sum is σ = 34608914368. Its totient is φ = 22229251200.

The previous prime is 28107523153. The next prime is 28107523177. The reversal of 28107523171 is 17132570182.

It is not a de Polignac number, because 28107523171 - 2⁷ = 28107523043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28107523171.

It is not an unprimeable number, because it can be changed into a prime (28107523177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147061 + ... + 279001.

It is an arithmetic number, because the mean of its divisors is an integer number (2163057148).

Almost surely, 2^28107523171 is an apocalyptic number.

28107523171 is a deficient number, since it is larger than the sum of its proper divisors (6501391197).

28107523171 is a wasteful number, since it uses less digits than its factorization.

28107523171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134302.

The product of its (nonzero) digits is 23520, while the sum is 37.

The spelling of 28107523171 in words is "twenty-eight billion, one hundred seven million, five hundred twenty-three thousand, one hundred seventy-one".