27156771131 has 24 divisors (see below), whose sum is σ = 32468166720. Its totient is φ = 22635344592.

The previous prime is 27156771121. The next prime is 27156771151. The reversal of 27156771131 is 13117765172.

It is not a de Polignac number, because 27156771131 - 2²⁶ = 27089662267 is a prime.

It is a super-2 number, since 2×27156771131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27156771121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 449900 + ... + 506678.

It is an arithmetic number, because the mean of its divisors is an integer number (1352840280).

Almost surely, 2^27156771131 is an apocalyptic number.

27156771131 is a deficient number, since it is larger than the sum of its proper divisors (5311395589).

27156771131 is a wasteful number, since it uses less digits than its factorization.

27156771131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57063 (or 57056 counting only the distinct ones).

The product of its digits is 61740, while the sum is 41.

The spelling of 27156771131 in words is "twenty-seven billion, one hundred fifty-six million, seven hundred seventy-one thousand, one hundred thirty-one".