28291588673 has 4 divisors (see below), whose sum is σ = 28333011888. Its totient is φ = 28250165460.

The previous prime is 28291588669. The next prime is 28291588723. The reversal of 28291588673 is 37688519282.

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 28291588673 - 2² = 28291588669 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28291588643) 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, 20710583 + ... + 20711948.

It is an arithmetic number, because the mean of its divisors is an integer number (7083252972).

Almost surely, 2^28291588673 is an apocalyptic number.

It is an amenable number.

28291588673 is a deficient number, since it is larger than the sum of its proper divisors (41423215).

28291588673 is an equidigital number, since it uses as much as digits as its factorization.

28291588673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41423214.

The product of its digits is 11612160, while the sum is 59.

The spelling of 28291588673 in words is "twenty-eight billion, two hundred ninety-one million, five hundred eighty-eight thousand, six hundred seventy-three".