28579319555 has 4 divisors (see below), whose sum is σ = 34295183472. Its totient is φ = 22863455640.

The previous prime is 28579319539. The next prime is 28579319557. The reversal of 28579319555 is 55591397582.

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

It is not a de Polignac number, because 28579319555 - 2⁴ = 28579319539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28579319494 and 28579319503.

It is not an unprimeable number, because it can be changed into a prime (28579319557) 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, 2857931951 + ... + 2857931960.

It is an arithmetic number, because the mean of its divisors is an integer number (8573795868).

Almost surely, 2^28579319555 is an apocalyptic number.

28579319555 is a deficient number, since it is larger than the sum of its proper divisors (5715863917).

28579319555 is an equidigital number, since it uses as much as digits as its factorization.

28579319555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5715863916.

The product of its digits is 17010000, while the sum is 59.

The spelling of 28579319555 in words is "twenty-eight billion, five hundred seventy-nine million, three hundred nineteen thousand, five hundred fifty-five".