27879127788 has 24 divisors (see below), whose sum is σ = 65187118080. Its totient is φ = 9273639760.

The previous prime is 27879127763. The next prime is 27879127799. The reversal of 27879127788 is 88772197872.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2419368 + ... + 2430863.

It is an arithmetic number, because the mean of its divisors is an integer number (2716129920).

Almost surely, 2^27879127788 is an apocalyptic number.

It is an amenable number.

27879127788 is an abundant number, since it is smaller than the sum of its proper divisors (37307990292).

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

27879127788 is a wasteful number, since it uses less digits than its factorization.

27879127788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4850717 (or 4850715 counting only the distinct ones).

The product of its digits is 44255232, while the sum is 66.

The spelling of 27879127788 in words is "twenty-seven billion, eight hundred seventy-nine million, one hundred twenty-seven thousand, seven hundred eighty-eight".