28653350681 has 2 divisors, whose sum is σ = 28653350682. Its totient is φ = 28653350680.

The previous prime is 28653350659. The next prime is 28653350741. The reversal of 28653350681 is 18605335682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14844985600 + 13808365081 = 121840^2 + 117509^2 .

It is a cyclic number.

It is not a de Polignac number, because 28653350681 - 2¹⁰ = 28653349657 is a prime.

It is a super-2 number, since 2×28653350681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28653350381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14326675340 + 14326675341.

It is an arithmetic number, because the mean of its divisors is an integer number (14326675341).

Almost surely, 2^28653350681 is an apocalyptic number.

It is an amenable number.

28653350681 is a deficient number, since it is larger than the sum of its proper divisors (1).

28653350681 is an equidigital number, since it uses as much as digits as its factorization.

28653350681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1036800, while the sum is 47.

The spelling of 28653350681 in words is "twenty-eight billion, six hundred fifty-three million, three hundred fifty thousand, six hundred eighty-one".