27881522082 has 42 divisors (see below), whose sum is σ = 62719082337. Its totient is φ = 9291715416.

The previous prime is 27881522077. The next prime is 27881522131. The reversal of 27881522082 is 28022518872.

27881522082 is a `hidden beast` number, since 278 + 81 + 5 + 220 + 82 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 27725247081 + 156275001 = 166509^2 + 12501^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=118071.

It is a super-2 number, since 2×27881522082² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 6373648 + ... + 6378020.

Almost surely, 2^27881522082 is an apocalyptic number.

27881522082 is an abundant number, since it is smaller than the sum of its proper divisors (34837560255).

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

27881522082 is an frugal number, since it uses more digits than its factorization.

27881522082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8766 (or 4378 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 45.

The spelling of 27881522082 in words is "twenty-seven billion, eight hundred eighty-one million, five hundred twenty-two thousand, eighty-two".