827868852541 has 2 divisors, whose sum is σ = 827868852542. Its totient is φ = 827868852540.

The previous prime is 827868852539. The next prime is 827868852571. The reversal of 827868852541 is 145258868728.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 480422265625 + 347446586916 = 693125^2 + 589446^2 .

It is a cyclic number.

It is not a de Polignac number, because 827868852541 - 2¹ = 827868852539 is a prime.

Together with 827868852539, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (827868852521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413934426270 + 413934426271.

It is an arithmetic number, because the mean of its divisors is an integer number (413934426271).

Almost surely, 2^827868852541 is an apocalyptic number.

It is an amenable number.

827868852541 is a deficient number, since it is larger than the sum of its proper divisors (1).

827868852541 is an equidigital number, since it uses as much as digits as its factorization.

827868852541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68812800, while the sum is 64.

The spelling of 827868852541 in words is "eight hundred twenty-seven billion, eight hundred sixty-eight million, eight hundred fifty-two thousand, five hundred forty-one".