28803947404033 has 4 divisors (see below), whose sum is σ = 28810688327428. Its totient is φ = 28797206480640.

The previous prime is 28803947404031. The next prime is 28803947404087. The reversal of 28803947404033 is 33040474930882.

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 16560610497729 + 12243336906304 = 4069473^2 + 3499048^2 .

It is a cyclic number.

It is not a de Polignac number, because 28803947404033 - 2¹ = 28803947404031 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28803947404031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3370455288 + ... + 3370463833.

It is an arithmetic number, because the mean of its divisors is an integer number (7202672081857).

Almost surely, 2^{28803947404033} is an apocalyptic number.

It is an amenable number.

28803947404033 is a deficient number, since it is larger than the sum of its proper divisors (6740923395).

28803947404033 is an equidigital number, since it uses as much as digits as its factorization.

28803947404033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6740923394.

The product of its (nonzero) digits is 13934592, while the sum is 55.

The spelling of 28803947404033 in words is "twenty-eight trillion, eight hundred three billion, nine hundred forty-seven million, four hundred four thousand, thirty-three".