27118977907 has 16 divisors (see below), whose sum is σ = 31096300032. Its totient is φ = 23167581120.

The previous prime is 27118977889. The next prime is 27118977911. The reversal of 27118977907 is 70977981172.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27118977907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27118977007) 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 15 ways as a sum of consecutive naturals, for example, 2850783 + ... + 2860279.

It is an arithmetic number, because the mean of its divisors is an integer number (1943518752).

Almost surely, 2^27118977907 is an apocalyptic number.

27118977907 is a deficient number, since it is larger than the sum of its proper divisors (3977322125).

27118977907 is an equidigital number, since it uses as much as digits as its factorization.

27118977907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10818.

The product of its (nonzero) digits is 3111696, while the sum is 58.

The spelling of 27118977907 in words is "twenty-seven billion, one hundred eighteen million, nine hundred seventy-seven thousand, nine hundred seven".