28552982641 has 2 divisors, whose sum is σ = 28552982642. Its totient is φ = 28552982640.

The previous prime is 28552982533. The next prime is 28552982683. The reversal of 28552982641 is 14628925582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24624200241 + 3928782400 = 156921^2 + 62680^2 .

It is a cyclic number.

It is not a de Polignac number, because 28552982641 - 2¹¹ = 28552980593 is a prime.

It is not a weakly prime, because it can be changed into another prime (28552982141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14276491320 + 14276491321.

It is an arithmetic number, because the mean of its divisors is an integer number (14276491321).

Almost surely, 2^28552982641 is an apocalyptic number.

It is an amenable number.

28552982641 is a deficient number, since it is larger than the sum of its proper divisors (1).

28552982641 is an equidigital number, since it uses as much as digits as its factorization.

28552982641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2764800, while the sum is 52.

The spelling of 28552982641 in words is "twenty-eight billion, five hundred fifty-two million, nine hundred eighty-two thousand, six hundred forty-one".