28555589473 has 4 divisors (see below), whose sum is σ = 28583287488. Its totient is φ = 28527891460.

The previous prime is 28555589467. The next prime is 28555589483. The reversal of 28555589473 is 37498555582.

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 28555589473 - 2¹³ = 28555581281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28555589483) 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, 13847461 + ... + 13849522.

It is an arithmetic number, because the mean of its divisors is an integer number (7145821872).

Almost surely, 2^28555589473 is an apocalyptic number.

It is an amenable number.

28555589473 is a deficient number, since it is larger than the sum of its proper divisors (27698015).

28555589473 is a wasteful number, since it uses less digits than its factorization.

28555589473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27698014.

The product of its digits is 60480000, while the sum is 61.

The spelling of 28555589473 in words is "twenty-eight billion, five hundred fifty-five million, five hundred eighty-nine thousand, four hundred seventy-three".