28544540653 has 2 divisors, whose sum is σ = 28544540654. Its totient is φ = 28544540652.

The previous prime is 28544540641. The next prime is 28544540657. The reversal of 28544540653 is 35604544582.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27848266884 + 696273769 = 166878^2 + 26387^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28544540653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28544540657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14272270326 + 14272270327.

It is an arithmetic number, because the mean of its divisors is an integer number (14272270327).

Almost surely, 2^28544540653 is an apocalyptic number.

It is an amenable number.

28544540653 is a deficient number, since it is larger than the sum of its proper divisors (1).

28544540653 is an equidigital number, since it uses as much as digits as its factorization.

28544540653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304000, while the sum is 46.

The spelling of 28544540653 in words is "twenty-eight billion, five hundred forty-four million, five hundred forty thousand, six hundred fifty-three".