27216774864013 has 4 divisors (see below), whose sum is σ = 31104885558880. Its totient is φ = 23328664169148.

The previous prime is 27216774864007. The next prime is 27216774864017. The reversal of 27216774864013 is 31046847761272.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27216774864013 - 2⁵ = 27216774863981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27216774864017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1944055347423 + ... + 1944055347436.

It is an arithmetic number, because the mean of its divisors is an integer number (7776221389720).

Almost surely, 2^{27216774864013} is an apocalyptic number.

It is an amenable number.

27216774864013 is a deficient number, since it is larger than the sum of its proper divisors (3888110694867).

27216774864013 is an equidigital number, since it uses as much as digits as its factorization.

27216774864013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3888110694866.

The product of its (nonzero) digits is 18966528, while the sum is 58.

The spelling of 27216774864013 in words is "twenty-seven trillion, two hundred sixteen billion, seven hundred seventy-four million, eight hundred sixty-four thousand, thirteen".