27945767136 has 48 divisors (see below), whose sum is σ = 83837303424. Its totient is φ = 7984504704.

The previous prime is 27945767077. The next prime is 27945767159. The reversal of 27945767136 is 63176754972.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20792310 + ... + 20793653.

It is an arithmetic number, because the mean of its divisors is an integer number (1746610488).

Almost surely, 2^27945767136 is an apocalyptic number.

It is an amenable number.

27945767136 is an abundant number, since it is smaller than the sum of its proper divisors (55891536288).

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

27945767136 is a wasteful number, since it uses less digits than its factorization.

27945767136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41585983 (or 41585975 counting only the distinct ones).

The product of its digits is 13335840, while the sum is 57.

The spelling of 27945767136 in words is "twenty-seven billion, nine hundred forty-five million, seven hundred sixty-seven thousand, one hundred thirty-six".