27161267131 has 4 divisors (see below), whose sum is σ = 27162003064. Its totient is φ = 27160531200.

The previous prime is 27161267101. The next prime is 27161267141. The reversal of 27161267131 is 13176216172.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27161267131 - 2⁵ = 27161267099 is a prime.

It is a super-2 number, since 2×27161267131² (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 (27161267101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309510 + ... + 387451.

It is an arithmetic number, because the mean of its divisors is an integer number (6790500766).

Almost surely, 2^27161267131 is an apocalyptic number.

27161267131 is a deficient number, since it is larger than the sum of its proper divisors (735933).

27161267131 is an equidigital number, since it uses as much as digits as its factorization.

27161267131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735932.

The product of its digits is 21168, while the sum is 37.

The spelling of 27161267131 in words is "twenty-seven billion, one hundred sixty-one million, two hundred sixty-seven thousand, one hundred thirty-one".