28210013406005 has 4 divisors (see below), whose sum is σ = 33852016087212. Its totient is φ = 22568010724800.

The previous prime is 28210013405999. The next prime is 28210013406037. The reversal of 28210013406005 is 50060431001282.

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 13179760595236 + 15030252810769 = 3630394^2 + 3876887^2 .

It is not a de Polignac number, because 28210013406005 - 2¹⁶ = 28210013340469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2821001340596 + ... + 2821001340605.

It is an arithmetic number, because the mean of its divisors is an integer number (8463004021803).

Almost surely, 2^{28210013406005} is an apocalyptic number.

It is an amenable number.

28210013406005 is a deficient number, since it is larger than the sum of its proper divisors (5642002681207).

28210013406005 is an equidigital number, since it uses as much as digits as its factorization.

28210013406005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5642002681206.

The product of its (nonzero) digits is 11520, while the sum is 32.

Adding to 28210013406005 its reverse (50060431001282), we get a palindrome (78270444407287).

The spelling of 28210013406005 in words is "twenty-eight trillion, two hundred ten billion, thirteen million, four hundred six thousand, five".