28587814841 has 2 divisors, whose sum is σ = 28587814842. Its totient is φ = 28587814840.

The previous prime is 28587814837. The next prime is 28587814891. The reversal of 28587814841 is 14841878582.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15381208441 + 13206606400 = 124021^2 + 114920^2 .

It is a cyclic number.

It is not a de Polignac number, because 28587814841 - 2² = 28587814837 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (28587814831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14293907420 + 14293907421.

It is an arithmetic number, because the mean of its divisors is an integer number (14293907421).

Almost surely, 2^28587814841 is an apocalyptic number.

It is an amenable number.

28587814841 is a deficient number, since it is larger than the sum of its proper divisors (1).

28587814841 is an equidigital number, since it uses as much as digits as its factorization.

28587814841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4587520, while the sum is 56.

The spelling of 28587814841 in words is "twenty-eight billion, five hundred eighty-seven million, eight hundred fourteen thousand, eight hundred forty-one".