27166281768516 has 24 divisors (see below), whose sum is σ = 69150535411104. Its totient is φ = 8232206596480.

The previous prime is 27166281768499. The next prime is 27166281768559. The reversal of 27166281768516 is 61586718266172.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 102902582325 + ... + 102902582588.

It is an arithmetic number, because the mean of its divisors is an integer number (2881272308796).

Almost surely, 2^{27166281768516} is an apocalyptic number.

It is an amenable number.

27166281768516 is an abundant number, since it is smaller than the sum of its proper divisors (41984253642588).

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

27166281768516 is a wasteful number, since it uses less digits than its factorization.

27166281768516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205805164931 (or 205805164929 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 66.

The spelling of 27166281768516 in words is "twenty-seven trillion, one hundred sixty-six billion, two hundred eighty-one million, seven hundred sixty-eight thousand, five hundred sixteen".