27821536132 has 48 divisors (see below), whose sum is σ = 54725397552. Its totient is φ = 12291102720.

The previous prime is 27821536129. The next prime is 27821536147. The reversal of 27821536132 is 23163512872.

It can be written as a sum of positive squares in 8 ways, for example, as 9313022016 + 18508514116 = 96504^2 + 136046^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10113 + ... + 236104.

It is an arithmetic number, because the mean of its divisors is an integer number (1140112449).

Almost surely, 2^27821536132 is an apocalyptic number.

It is an amenable number.

27821536132 is a deficient number, since it is larger than the sum of its proper divisors (26903861420).

27821536132 is a wasteful number, since it uses less digits than its factorization.

27821536132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246328 (or 246326 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The spelling of 27821536132 in words is "twenty-seven billion, eight hundred twenty-one million, five hundred thirty-six thousand, one hundred thirty-two".