27684125205 has 32 divisors (see below), whose sum is σ = 49233121920. Its totient is φ = 13169345280.

The previous prime is 27684125153. The next prime is 27684125219. The reversal of 27684125205 is 50252148672.

It is not a de Polignac number, because 27684125205 - 2¹¹ = 27684123157 is a prime.

It is a super-2 number, since 2×27684125205² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1574110 + ... + 1591599.

It is an arithmetic number, because the mean of its divisors is an integer number (1538535060).

Almost surely, 2^27684125205 is an apocalyptic number.

It is an amenable number.

27684125205 is a deficient number, since it is larger than the sum of its proper divisors (21548996715).

27684125205 is a wasteful number, since it uses less digits than its factorization.

27684125205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3165781.

The product of its (nonzero) digits is 268800, while the sum is 42.

The spelling of 27684125205 in words is "twenty-seven billion, six hundred eighty-four million, one hundred twenty-five thousand, two hundred five".