27647871252 has 24 divisors (see below), whose sum is σ = 64516384800. Its totient is φ = 9215287776.

The previous prime is 27647871247. The next prime is 27647871253. The reversal of 27647871252 is 25217874672.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 27647871195 and 27647871204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27647871253) 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, 105574 + ... + 257762.

It is an arithmetic number, because the mean of its divisors is an integer number (2688182700).

Almost surely, 2^27647871252 is an apocalyptic number.

It is an amenable number.

27647871252 is an abundant number, since it is smaller than the sum of its proper divisors (36868513548).

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

27647871252 is a wasteful number, since it uses less digits than its factorization.

27647871252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167335 (or 167333 counting only the distinct ones).

The product of its digits is 2634240, while the sum is 51.

The spelling of 27647871252 in words is "twenty-seven billion, six hundred forty-seven million, eight hundred seventy-one thousand, two hundred fifty-two".