27131115073 has 4 divisors (see below), whose sum is σ = 27133981380. Its totient is φ = 27128248768.

The previous prime is 27131115059. The next prime is 27131115079. The reversal of 27131115073 is 37051113172.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2365168689 + 24765946384 = 48633^2 + 157372^2 .

It is a cyclic number.

It is not a de Polignac number, because 27131115073 - 2²⁹ = 26594244161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27131115079) 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, 1418908 + ... + 1437901.

It is an arithmetic number, because the mean of its divisors is an integer number (6783495345).

Almost surely, 2^27131115073 is an apocalyptic number.

It is an amenable number.

27131115073 is a deficient number, since it is larger than the sum of its proper divisors (2866307).

27131115073 is an equidigital number, since it uses as much as digits as its factorization.

27131115073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866306.

The product of its (nonzero) digits is 4410, while the sum is 31.

The spelling of 27131115073 in words is "twenty-seven billion, one hundred thirty-one million, one hundred fifteen thousand, seventy-three".