27975280872 has 64 divisors (see below), whose sum is σ = 87195686400. Its totient is φ = 7266306240.

The previous prime is 27975280867. The next prime is 27975280889. The reversal of 27975280872 is 27808257972.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7567222 + ... + 7570917.

It is an arithmetic number, because the mean of its divisors is an integer number (1362432600).

Almost surely, 2^27975280872 is an apocalyptic number.

27975280872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

27975280872 is an abundant number, since it is smaller than the sum of its proper divisors (59220405528).

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

27975280872 is a wasteful number, since it uses less digits than its factorization.

27975280872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15138166 (or 15138162 counting only the distinct ones).

The product of its (nonzero) digits is 7902720, while the sum is 57.

The spelling of 27975280872 in words is "twenty-seven billion, nine hundred seventy-five million, two hundred eighty thousand, eight hundred seventy-two".