27727153213 has 2 divisors, whose sum is σ = 27727153214. Its totient is φ = 27727153212.

The previous prime is 27727153133. The next prime is 27727153219. The reversal of 27727153213 is 31235172772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27410775844 + 316377369 = 165562^2 + 17787^2 .

It is a cyclic number.

It is not a de Polignac number, because 27727153213 - 2⁹ = 27727152701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27727153219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13863576606 + 13863576607.

It is an arithmetic number, because the mean of its divisors is an integer number (13863576607).

Almost surely, 2^27727153213 is an apocalyptic number.

It is an amenable number.

27727153213 is a deficient number, since it is larger than the sum of its proper divisors (1).

27727153213 is an equidigital number, since it uses as much as digits as its factorization.

27727153213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 123480, while the sum is 40.

The spelling of 27727153213 in words is "twenty-seven billion, seven hundred twenty-seven million, one hundred fifty-three thousand, two hundred thirteen".