27761072168 has 8 divisors (see below), whose sum is σ = 52052010330. Its totient is φ = 13880536080.

The previous prime is 27761072153. The next prime is 27761072189. The reversal of 27761072168 is 86127016772.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 25230780964 + 2530291204 = 158842^2 + 50302^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1735067003 + ... + 1735067018.

Almost surely, 2^27761072168 is an apocalyptic number.

It is an amenable number.

27761072168 is a deficient number, since it is larger than the sum of its proper divisors (24290938162).

27761072168 is a wasteful number, since it uses less digits than its factorization.

27761072168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3470134027 (or 3470134023 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 47.

The spelling of 27761072168 in words is "twenty-seven billion, seven hundred sixty-one million, seventy-two thousand, one hundred sixty-eight".