28540659841 has 2 divisors, whose sum is σ = 28540659842. Its totient is φ = 28540659840.

The previous prime is 28540659827. The next prime is 28540659869. The reversal of 28540659841 is 14895604582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27383299441 + 1157360400 = 165479^2 + 34020^2 .

It is a cyclic number.

It is not a de Polignac number, because 28540659841 - 2¹³ = 28540651649 is a prime.

It is not a weakly prime, because it can be changed into another prime (28540659881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14270329920 + 14270329921.

It is an arithmetic number, because the mean of its divisors is an integer number (14270329921).

Almost surely, 2^28540659841 is an apocalyptic number.

It is an amenable number.

28540659841 is a deficient number, since it is larger than the sum of its proper divisors (1).

28540659841 is an equidigital number, since it uses as much as digits as its factorization.

28540659841 is an evil number, because the sum of its binary digits is even.

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

The spelling of 28540659841 in words is "twenty-eight billion, five hundred forty million, six hundred fifty-nine thousand, eight hundred forty-one".