8128423605 has 16 divisors (see below), whose sum is σ = 13770506304. Its totient is φ = 4080149760.

The previous prime is 8128423591. The next prime is 8128423607. The reversal of 8128423605 is 5063248218.

It is not a de Polignac number, because 8128423605 - 2¹⁰ = 8128422581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8128423607) 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, 15937831 + ... + 15938340.

It is an arithmetic number, because the mean of its divisors is an integer number (860656644).

Almost surely, 2^8128423605 is an apocalyptic number.

8128423605 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8128423605 is a deficient number, since it is larger than the sum of its proper divisors (5642082699).

8128423605 is a wasteful number, since it uses less digits than its factorization.

8128423605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31876196.

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 8128423605 is about 90157.7706301570. The cubic root of 8128423605 is about 2010.6452063476.

The spelling of 8128423605 in words is "eight billion, one hundred twenty-eight million, four hundred twenty-three thousand, six hundred five".