28545615113 has 2 divisors, whose sum is σ = 28545615114. Its totient is φ = 28545615112.

The previous prime is 28545615097. The next prime is 28545615151. The reversal of 28545615113 is 31151654582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25233957904 + 3311657209 = 158852^2 + 57547^2 .

It is a cyclic number.

It is not a de Polignac number, because 28545615113 - 2⁴ = 28545615097 is a prime.

It is not a weakly prime, because it can be changed into another prime (28545605113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14272807556 + 14272807557.

It is an arithmetic number, because the mean of its divisors is an integer number (14272807557).

Almost surely, 2^28545615113 is an apocalyptic number.

It is an amenable number.

28545615113 is a deficient number, since it is larger than the sum of its proper divisors (1).

28545615113 is an equidigital number, since it uses as much as digits as its factorization.

28545615113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144000, while the sum is 41.

The spelling of 28545615113 in words is "twenty-eight billion, five hundred forty-five million, six hundred fifteen thousand, one hundred thirteen".