27872903205 has 24 divisors (see below), whose sum is σ = 55214894592. Its totient is φ = 12741898464.

The previous prime is 27872903167. The next prime is 27872903207. The reversal of 27872903205 is 50230927872.

It is not a de Polignac number, because 27872903205 - 2¹⁰ = 27872902181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27872903207) 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 23 ways as a sum of consecutive naturals, for example, 44242389 + ... + 44243018.

It is an arithmetic number, because the mean of its divisors is an integer number (2300620608).

Almost surely, 2^27872903205 is an apocalyptic number.

It is an amenable number.

27872903205 is a deficient number, since it is larger than the sum of its proper divisors (27341991387).

27872903205 is a wasteful number, since it uses less digits than its factorization.

27872903205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88485425 (or 88485422 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 27872903205 in words is "twenty-seven billion, eight hundred seventy-two million, nine hundred three thousand, two hundred five".