27108447640 has 16 divisors (see below), whose sum is σ = 60994007280. Its totient is φ = 10843379040.

The previous prime is 27108447599. The next prime is 27108447659. The reversal of 27108447640 is 4674480172.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338855556 + ... + 338855635.

It is an arithmetic number, because the mean of its divisors is an integer number (3812125455).

Almost surely, 2^27108447640 is an apocalyptic number.

27108447640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27108447640 is an abundant number, since it is smaller than the sum of its proper divisors (33885559640).

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

27108447640 is a wasteful number, since it uses less digits than its factorization.

27108447640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677711202 (or 677711198 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 43.

The spelling of 27108447640 in words is "twenty-seven billion, one hundred eight million, four hundred forty-seven thousand, six hundred forty".