27860131105 has 4 divisors (see below), whose sum is σ = 33432157332. Its totient is φ = 22288104880.

The previous prime is 27860131093. The next prime is 27860131139. The reversal of 27860131105 is 50113106872.

It is a happy number.

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 15290806336 + 12569324769 = 123656^2 + 112113^2 .

It is not a de Polignac number, because 27860131105 - 2¹⁵ = 27860098337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2786013106 + ... + 2786013115.

It is an arithmetic number, because the mean of its divisors is an integer number (8358039333).

Almost surely, 2^27860131105 is an apocalyptic number.

It is an amenable number.

27860131105 is a deficient number, since it is larger than the sum of its proper divisors (5572026227).

27860131105 is an equidigital number, since it uses as much as digits as its factorization.

27860131105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5572026226.

The product of its (nonzero) digits is 10080, while the sum is 34.

Adding to 27860131105 its reverse (50113106872), we get a palindrome (77973237977).

The spelling of 27860131105 in words is "twenty-seven billion, eight hundred sixty million, one hundred thirty-one thousand, one hundred five".