28510049473 has 4 divisors (see below), whose sum is σ = 28514865600. Its totient is φ = 28505233348.

The previous prime is 28510049431. The next prime is 28510049497. The reversal of 28510049473 is 37494001582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28510049473 - 2¹⁷ = 28509918401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28510049573) 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, 2399173 + ... + 2411026.

It is an arithmetic number, because the mean of its divisors is an integer number (7128716400).

Almost surely, 2^28510049473 is an apocalyptic number.

It is an amenable number.

28510049473 is a deficient number, since it is larger than the sum of its proper divisors (4816127).

28510049473 is an equidigital number, since it uses as much as digits as its factorization.

28510049473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4816126.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 28510049473 in words is "twenty-eight billion, five hundred ten million, forty-nine thousand, four hundred seventy-three".