28360566517 has 2 divisors, whose sum is σ = 28360566518. Its totient is φ = 28360566516.

The previous prime is 28360566463. The next prime is 28360566541. The reversal of 28360566517 is 71566506382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23876121361 + 4484445156 = 154519^2 + 66966^2 .

It is a cyclic number.

It is not a de Polignac number, because 28360566517 - 2⁷ = 28360566389 is a prime.

It is a super-2 number, since 2×28360566517² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28360566587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14180283258 + 14180283259.

It is an arithmetic number, because the mean of its divisors is an integer number (14180283259).

Almost surely, 2^28360566517 is an apocalyptic number.

It is an amenable number.

28360566517 is a deficient number, since it is larger than the sum of its proper divisors (1).

28360566517 is an equidigital number, since it uses as much as digits as its factorization.

28360566517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 28360566517 in words is "twenty-eight billion, three hundred sixty million, five hundred sixty-six thousand, five hundred seventeen".