27315570613 has 2 divisors, whose sum is σ = 27315570614. Its totient is φ = 27315570612.

The previous prime is 27315570559. The next prime is 27315570677. The reversal of 27315570613 is 31607551372.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26496351729 + 819218884 = 162777^2 + 28622^2 .

It is a cyclic number.

It is not a de Polignac number, because 27315570613 - 2³³ = 18725636021 is a prime.

It is a super-2 number, since 2×27315570613² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27315570313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13657785306 + 13657785307.

It is an arithmetic number, because the mean of its divisors is an integer number (13657785307).

Almost surely, 2^27315570613 is an apocalyptic number.

It is an amenable number.

27315570613 is a deficient number, since it is larger than the sum of its proper divisors (1).

27315570613 is an equidigital number, since it uses as much as digits as its factorization.

27315570613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 132300, while the sum is 40.

The spelling of 27315570613 in words is "twenty-seven billion, three hundred fifteen million, five hundred seventy thousand, six hundred thirteen".