27660838909 has 8 divisors (see below), whose sum is σ = 30185652960. Its totient is φ = 25137723600.

The previous prime is 27660838883. The next prime is 27660838921. The reversal of 27660838909 is 90983806672.

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

It is not a de Polignac number, because 27660838909 - 2¹⁵ = 27660806141 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 (27660838949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390514 + ... + 455875.

It is an arithmetic number, because the mean of its divisors is an integer number (3773206620).

Almost surely, 2^27660838909 is an apocalyptic number.

It is an amenable number.

27660838909 is a deficient number, since it is larger than the sum of its proper divisors (2524814051).

27660838909 is a wasteful number, since it uses less digits than its factorization.

27660838909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849371.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 27660838909 in words is "twenty-seven billion, six hundred sixty million, eight hundred thirty-eight thousand, nine hundred nine".