27013930876861 has 2 divisors, whose sum is σ = 27013930876862. Its totient is φ = 27013930876860.

The previous prime is 27013930876763. The next prime is 27013930876879. The reversal of 27013930876861 is 16867803931072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21977990948761 + 5035939928100 = 4688069^2 + 2244090^2 .

It is a cyclic number.

It is not a de Polignac number, because 27013930876861 - 2¹¹ = 27013930874813 is a prime.

It is a super-2 number, since 2×27013930876861² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27013930876861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27013930876661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13506965438430 + 13506965438431.

It is an arithmetic number, because the mean of its divisors is an integer number (13506965438431).

Almost surely, 2^{27013930876861} is an apocalyptic number.

It is an amenable number.

27013930876861 is a deficient number, since it is larger than the sum of its proper divisors (1).

27013930876861 is an equidigital number, since it uses as much as digits as its factorization.

27013930876861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18289152, while the sum is 61.

The spelling of 27013930876861 in words is "twenty-seven trillion, thirteen billion, nine hundred thirty million, eight hundred seventy-six thousand, eight hundred sixty-one".