27867129397 has 8 divisors (see below), whose sum is σ = 27907509056. Its totient is φ = 27826781472.

The previous prime is 27867129379. The next prime is 27867129443. The reversal of 27867129397 is 79392176872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27867129397 - 2¹¹ = 27867127349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27867129307) 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, 2152618 + ... + 2165524.

It is an arithmetic number, because the mean of its divisors is an integer number (3488438632).

Almost surely, 2^27867129397 is an apocalyptic number.

It is an amenable number.

27867129397 is a deficient number, since it is larger than the sum of its proper divisors (40379659).

27867129397 is a wasteful number, since it uses less digits than its factorization.

27867129397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15867.

The product of its digits is 16003008, while the sum is 61.

The spelling of 27867129397 in words is "twenty-seven billion, eight hundred sixty-seven million, one hundred twenty-nine thousand, three hundred ninety-seven".