28600317428561 has 2 divisors, whose sum is σ = 28600317428562. Its totient is φ = 28600317428560.

The previous prime is 28600317428549. The next prime is 28600317428651. The reversal of 28600317428561 is 16582471300682.

Together with next prime (28600317428651) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26769437818561 + 1830879610000 = 5173919^2 + 1353100^2 .

It is a cyclic number.

It is not a de Polignac number, because 28600317428561 - 2¹⁰ = 28600317427537 is a prime.

It is not a weakly prime, because it can be changed into another prime (28600317424561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14300158714280 + 14300158714281.

It is an arithmetic number, because the mean of its divisors is an integer number (14300158714281).

Almost surely, 2^{28600317428561} is an apocalyptic number.

It is an amenable number.

28600317428561 is a deficient number, since it is larger than the sum of its proper divisors (1).

28600317428561 is an equidigital number, since it uses as much as digits as its factorization.

28600317428561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 28600317428561 in words is "twenty-eight trillion, six hundred billion, three hundred seventeen million, four hundred twenty-eight thousand, five hundred sixty-one".