27065328640 has 88 divisors (see below), whose sum is σ = 74200180032. Its totient is φ = 9279528960.

The previous prime is 27065328629. The next prime is 27065328673. The reversal of 27065328640 is 4682356072.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341746 + ... + 413425.

It is an arithmetic number, because the mean of its divisors is an integer number (843183864).

Almost surely, 2^27065328640 is an apocalyptic number.

27065328640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27065328640 is an abundant number, since it is smaller than the sum of its proper divisors (47134851392).

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

27065328640 is an equidigital number, since it uses as much as digits as its factorization.

27065328640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755203 (or 755185 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 43.

It can be divided in two parts, 2706532 and 8640, that added together give a palindrome (2715172).

The spelling of 27065328640 in words is "twenty-seven billion, sixty-five million, three hundred twenty-eight thousand, six hundred forty".