28805414400001 has 4 divisors (see below), whose sum is σ = 28846506290004. Its totient is φ = 28764322510000.

The previous prime is 28805414399917. The next prime is 28805414400011. The reversal of 28805414400001 is 10000441450882.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12827686643776 + 15977727756225 = 3581576^2 + 3997215^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28805414400001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28805414400011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20545943950 + ... + 20545945351.

It is an arithmetic number, because the mean of its divisors is an integer number (7211626572501).

Almost surely, 2^{28805414400001} is an apocalyptic number.

It is an amenable number.

28805414400001 is a deficient number, since it is larger than the sum of its proper divisors (41091890003).

28805414400001 is an equidigital number, since it uses as much as digits as its factorization.

28805414400001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41091890002.

The product of its (nonzero) digits is 40960, while the sum is 37.

Adding to 28805414400001 its reverse (10000441450882), we get a palindrome (38805855850883).

The spelling of 28805414400001 in words is "twenty-eight trillion, eight hundred five billion, four hundred fourteen million, four hundred thousand, one".