27840804872 has 32 divisors (see below), whose sum is σ = 53246592000. Its totient is φ = 13644356544.

The previous prime is 27840804863. The next prime is 27840804877.

27840804872 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×27840804872² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27840804872.

It is not an unprimeable number, because it can be changed into a prime (27840804877) 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 7 ways as a sum of consecutive naturals, for example, 80747 + ... + 249402.

It is an arithmetic number, because the mean of its divisors is an integer number (1663956000).

Almost surely, 2^27840804872 is an apocalyptic number.

It is an amenable number.

27840804872 is a deficient number, since it is larger than the sum of its proper divisors (25405787128).

27840804872 is a wasteful number, since it uses less digits than its factorization.

27840804872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330365 (or 330361 counting only the distinct ones).

The product of its (nonzero) digits is 1605632, while the sum is 50.

The spelling of 27840804872 in words is "twenty-seven billion, eight hundred forty million, eight hundred four thousand, eight hundred seventy-two".