27563896938680 has 64 divisors (see below), whose sum is σ = 62634337668000. Its totient is φ = 10916129497600.

The previous prime is 27563896938679. The next prime is 27563896938701. The reversal of 27563896938680 is 8683969836572.

It is a junction number, because it is equal to n+sod(n) for n = 27563896938595 and 27563896938604.

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 15 ways as a sum of consecutive naturals, for example, 305714246 + ... + 305804394.

Almost surely, 2^{27563896938680} is an apocalyptic number.

27563896938680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27563896938680 is an abundant number, since it is smaller than the sum of its proper divisors (35070440729320).

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

27563896938680 is a wasteful number, since it uses less digits than its factorization.

27563896938680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165944 (or 165940 counting only the distinct ones).

The product of its (nonzero) digits is 5643509760, while the sum is 80.

The spelling of 27563896938680 in words is "twenty-seven trillion, five hundred sixty-three billion, eight hundred ninety-six million, nine hundred thirty-eight thousand, six hundred eighty".