28518178768129 has 8 divisors (see below), whose sum is σ = 30196490899680. Its totient is φ = 26839952437056.

The previous prime is 28518178768049. The next prime is 28518178768141. The reversal of 28518178768129 is 92186787181582.

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

It is a cyclic number.

It is not a de Polignac number, because 28518178768129 - 2¹³ = 28518178759937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28518176768129) 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, 20765179 + ... + 22095904.

It is an arithmetic number, because the mean of its divisors is an integer number (3774561362460).

Almost surely, 2^{28518178768129} is an apocalyptic number.

It is an amenable number.

28518178768129 is a deficient number, since it is larger than the sum of its proper divisors (1678312131551).

28518178768129 is a wasteful number, since it uses less digits than its factorization.

28518178768129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42900239.

The product of its digits is 216760320, while the sum is 73.

The spelling of 28518178768129 in words is "twenty-eight trillion, five hundred eighteen billion, one hundred seventy-eight million, seven hundred sixty-eight thousand, one hundred twenty-nine".