827868852549 has 96 divisors (see below), whose sum is σ = 1353038993280. Its totient is φ = 484652077056.

The previous prime is 827868852541. The next prime is 827868852571. The reversal of 827868852549 is 945258868728.

It is a happy number.

827868852549 is a `hidden beast` number, since 8 + 2 + 78 + 6 + 8 + 8 + 5 + 2 + 549 = 666.

It is not a de Polignac number, because 827868852549 - 2³ = 827868852541 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (827868852541) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 167007579 + ... + 167012535.

It is an arithmetic number, because the mean of its divisors is an integer number (14094156180).

Almost surely, 2^827868852549 is an apocalyptic number.

It is an amenable number.

827868852549 is a deficient number, since it is larger than the sum of its proper divisors (525170140731).

827868852549 is a wasteful number, since it uses less digits than its factorization.

827868852549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5859 (or 5856 counting only the distinct ones).

The product of its digits is 619315200, while the sum is 72.

The spelling of 827868852549 in words is "eight hundred twenty-seven billion, eight hundred sixty-eight million, eight hundred fifty-two thousand, five hundred forty-nine".