827147057524821 has 16 divisors (see below), whose sum is σ = 1336803325293120. Its totient is φ = 501301246984560.

The previous prime is 827147057524807. The next prime is 827147057524859. The reversal of 827147057524821 is 128425750741728.

827147057524821 is a `hidden beast` number, since 8 + 2 + 7 + 1 + 470 + 57 + 52 + 48 + 21 = 666.

It is not a de Polignac number, because 827147057524821 - 2⁷ = 827147057524693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (827147057524861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1392503463550 + ... + 1392503464143.

It is an arithmetic number, because the mean of its divisors is an integer number (83550207830820).

Almost surely, 2^{827147057524821} is an apocalyptic number.

It is an amenable number.

827147057524821 is a deficient number, since it is larger than the sum of its proper divisors (509656267768299).

827147057524821 is a wasteful number, since it uses less digits than its factorization.

827147057524821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2785006927713 (or 2785006927707 counting only the distinct ones).

The product of its (nonzero) digits is 70246400, while the sum is 63.

The spelling of 827147057524821 in words is "eight hundred twenty-seven trillion, one hundred forty-seven billion, fifty-seven million, five hundred twenty-four thousand, eight hundred twenty-one".