27431357113 has 2 divisors, whose sum is σ = 27431357114. Its totient is φ = 27431357112.

The previous prime is 27431357111. The next prime is 27431357203. The reversal of 27431357113 is 31175313472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25473117609 + 1958239504 = 159603^2 + 44252^2 .

It is a cyclic number.

It is not a de Polignac number, because 27431357113 - 2¹ = 27431357111 is a prime.

Together with 27431357111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (27431357111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13715678556 + 13715678557.

It is an arithmetic number, because the mean of its divisors is an integer number (13715678557).

Almost surely, 2^27431357113 is an apocalyptic number.

It is an amenable number.

27431357113 is a deficient number, since it is larger than the sum of its proper divisors (1).

27431357113 is an equidigital number, since it uses as much as digits as its factorization.

27431357113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 37.

The spelling of 27431357113 in words is "twenty-seven billion, four hundred thirty-one million, three hundred fifty-seven thousand, one hundred thirteen".