27959012911 has 4 divisors (see below), whose sum is σ = 29174622192. Its totient is φ = 26743403632.

The previous prime is 27959012869. The next prime is 27959012941. The reversal of 27959012911 is 11921095972.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27959012911 - 2⁹ = 27959012399 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 (27959012941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 607804606 + ... + 607804651.

It is an arithmetic number, because the mean of its divisors is an integer number (7293655548).

Almost surely, 2^27959012911 is an apocalyptic number.

27959012911 is a deficient number, since it is larger than the sum of its proper divisors (1215609281).

27959012911 is a wasteful number, since it uses less digits than its factorization.

27959012911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215609280.

The product of its (nonzero) digits is 102060, while the sum is 46.

The spelling of 27959012911 in words is "twenty-seven billion, nine hundred fifty-nine million, twelve thousand, nine hundred eleven".