27746478852 has 12 divisors (see below), whose sum is σ = 64741784016. Its totient is φ = 9248826280.

The previous prime is 27746478847. The next prime is 27746478853. The reversal of 27746478852 is 25887464772.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (27746478853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1156103274 + ... + 1156103297.

It is an arithmetic number, because the mean of its divisors is an integer number (5395148668).

Almost surely, 2^27746478852 is an apocalyptic number.

It is an amenable number.

27746478852 is an abundant number, since it is smaller than the sum of its proper divisors (36995305164).

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

27746478852 is a wasteful number, since it uses less digits than its factorization.

27746478852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2312206578 (or 2312206576 counting only the distinct ones).

The product of its digits is 42147840, while the sum is 60.

The spelling of 27746478852 in words is "twenty-seven billion, seven hundred forty-six million, four hundred seventy-eight thousand, eight hundred fifty-two".