27085613131 has 2 divisors, whose sum is σ = 27085613132. Its totient is φ = 27085613130.

The previous prime is 27085613129. The next prime is 27085613141. The reversal of 27085613131 is 13131658072.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27085613131 - 2¹ = 27085613129 is a prime.

It is a super-2 number, since 2×27085613131² (a number of 22 digits) contains 22 as substring.

Together with 27085613129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (27085613101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13542806565 + 13542806566.

It is an arithmetic number, because the mean of its divisors is an integer number (13542806566).

Almost surely, 2^27085613131 is an apocalyptic number.

27085613131 is a deficient number, since it is larger than the sum of its proper divisors (1).

27085613131 is an equidigital number, since it uses as much as digits as its factorization.

27085613131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 27085613131 in words is "twenty-seven billion, eighty-five million, six hundred thirteen thousand, one hundred thirty-one".