28556967359 has 4 divisors (see below), whose sum is σ = 29253478800. Its totient is φ = 27860455920.

The previous prime is 28556967349. The next prime is 28556967367. The reversal of 28556967359 is 95376965582.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28556967359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28556967295 and 28556967304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28556967349) 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, 348255659 + ... + 348255740.

It is an arithmetic number, because the mean of its divisors is an integer number (7313369700).

Almost surely, 2^28556967359 is an apocalyptic number.

28556967359 is a deficient number, since it is larger than the sum of its proper divisors (696511441).

28556967359 is an equidigital number, since it uses as much as digits as its factorization.

28556967359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696511440.

The product of its digits is 122472000, while the sum is 65.

The spelling of 28556967359 in words is "twenty-eight billion, five hundred fifty-six million, nine hundred sixty-seven thousand, three hundred fifty-nine".