27747726168 has 16 divisors (see below), whose sum is σ = 69369315480. Its totient is φ = 9249242048.

The previous prime is 27747726163. The next prime is 27747726221. The reversal of 27747726168 is 86162774772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27747726161) 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 3 ways as a sum of consecutive naturals, for example, 578077605 + ... + 578077652.

Almost surely, 2^27747726168 is an apocalyptic number.

It is an amenable number.

27747726168 is an abundant number, since it is smaller than the sum of its proper divisors (41621589312).

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

27747726168 is a wasteful number, since it uses less digits than its factorization.

27747726168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156155266 (or 1156155262 counting only the distinct ones).

The product of its digits is 11063808, while the sum is 57.

The spelling of 27747726168 in words is "twenty-seven billion, seven hundred forty-seven million, seven hundred twenty-six thousand, one hundred sixty-eight".