28448850970517 has 2 divisors, whose sum is σ = 28448850970518. Its totient is φ = 28448850970516.

The previous prime is 28448850970457. The next prime is 28448850970541. The reversal of 28448850970517 is 71507905884482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26758749568996 + 1690101401521 = 5172886^2 + 1300039^2 .

It is a cyclic number.

It is not a de Polignac number, because 28448850970517 - 2¹⁴ = 28448850954133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28448850970417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14224425485258 + 14224425485259.

It is an arithmetic number, because the mean of its divisors is an integer number (14224425485259).

Almost surely, 2^{28448850970517} is an apocalyptic number.

It is an amenable number.

28448850970517 is a deficient number, since it is larger than the sum of its proper divisors (1).

28448850970517 is an equidigital number, since it uses as much as digits as its factorization.

28448850970517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180633600, while the sum is 68.

The spelling of 28448850970517 in words is "twenty-eight trillion, four hundred forty-eight billion, eight hundred fifty million, nine hundred seventy thousand, five hundred seventeen".