27843116865 has 16 divisors (see below), whose sum is σ = 45304056000. Its totient is φ = 14597972672.

The previous prime is 27843116863. The next prime is 27843116897. The reversal of 27843116865 is 56861134872.

It is a cyclic number.

It is not a de Polignac number, because 27843116865 - 2¹ = 27843116863 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (27843116863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15729690 + ... + 15731459.

It is an arithmetic number, because the mean of its divisors is an integer number (2831503500).

Almost surely, 2^27843116865 is an apocalyptic number.

It is an amenable number.

27843116865 is a deficient number, since it is larger than the sum of its proper divisors (17460939135).

27843116865 is a wasteful number, since it uses less digits than its factorization.

27843116865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31461216.

The product of its digits is 1935360, while the sum is 51.

It can be divided in two parts, 278431 and 16865, that added together give a triangular number (295296 = T₇₆₈).

The spelling of 27843116865 in words is "twenty-seven billion, eight hundred forty-three million, one hundred sixteen thousand, eight hundred sixty-five".