827868852540 has 36 divisors (see below), whose sum is σ = 2511202186584. Its totient is φ = 220765027296.

The previous prime is 827868852539. The next prime is 827868852541. The reversal of 827868852540 is 45258868728.

827868852540 is a `hidden beast` number, since 8 + 2 + 7 + 8 + 6 + 8 + 85 + 2 + 540 = 666.

It is an interprime number because it is at equal distance from previous prime (827868852539) and next prime (827868852541).

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 2299635522 + ... + 2299635881.

It is an arithmetic number, because the mean of its divisors is an integer number (69755616294).

Almost surely, 2^827868852540 is an apocalyptic number.

It is an amenable number.

827868852540 is an abundant number, since it is smaller than the sum of its proper divisors (1683333334044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

827868852540 is a wasteful number, since it uses less digits than its factorization.

827868852540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4599271418 (or 4599271413 counting only the distinct ones).

The product of its (nonzero) digits is 68812800, while the sum is 63.

The spelling of 827868852540 in words is "eight hundred twenty-seven billion, eight hundred sixty-eight million, eight hundred fifty-two thousand, five hundred forty".