27881147544548 has 6 divisors (see below), whose sum is σ = 48792008202966. Its totient is φ = 13940573772272.

The previous prime is 27881147544539. The next prime is 27881147544581. The reversal of 27881147544548 is 84544574118872.

It can be written as a sum of positive squares in only one way, i.e., 24594874699684 + 3286272844864 = 4959322^2 + 1812808^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3485143443065 + ... + 3485143443072.

It is an arithmetic number, because the mean of its divisors is an integer number (8132001367161).

Almost surely, 2^{27881147544548} is an apocalyptic number.

It is an amenable number.

27881147544548 is a deficient number, since it is larger than the sum of its proper divisors (20910860658418).

27881147544548 is a wasteful number, since it uses less digits than its factorization.

27881147544548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6970286886141 (or 6970286886139 counting only the distinct ones).

The product of its digits is 321126400, while the sum is 68.

The spelling of 27881147544548 in words is "twenty-seven trillion, eight hundred eighty-one billion, one hundred forty-seven million, five hundred forty-four thousand, five hundred forty-eight".