27308766720 has 80 divisors (see below), whose sum is σ = 87302738160. Its totient is φ = 7282335744.

The previous prime is 27308766713. The next prime is 27308766767. The reversal of 27308766720 is 2766780372.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 27308766720.

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 7 ways as a sum of consecutive naturals, for example, 1770235 + ... + 1785594.

It is an arithmetic number, because the mean of its divisors is an integer number (1091284227).

Almost surely, 2^27308766720 is an apocalyptic number.

27308766720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27308766720 is an abundant number, since it is smaller than the sum of its proper divisors (59993971440).

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

27308766720 is an equidigital number, since it uses as much as digits as its factorization.

27308766720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3555855 (or 3555839 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 48.

The spelling of 27308766720 in words is "twenty-seven billion, three hundred eight million, seven hundred sixty-six thousand, seven hundred twenty".