28501577223 has 16 divisors (see below), whose sum is σ = 43446374400. Its totient is φ = 16280840736.

The previous prime is 28501577213. The next prime is 28501577317. The reversal of 28501577223 is 32277510582.

It is not a de Polignac number, because 28501577223 - 2⁵ = 28501577191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28501577213) 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, 179623 + ... + 298776.

It is an arithmetic number, because the mean of its divisors is an integer number (2715398400).

Almost surely, 2^28501577223 is an apocalyptic number.

28501577223 is a deficient number, since it is larger than the sum of its proper divisors (14944797177).

28501577223 is a wasteful number, since it uses less digits than its factorization.

28501577223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481246.

The product of its (nonzero) digits is 235200, while the sum is 42.

The spelling of 28501577223 in words is "twenty-eight billion, five hundred one million, five hundred seventy-seven thousand, two hundred twenty-three".