27429236105 has 4 divisors (see below), whose sum is σ = 32915083332. Its totient is φ = 21943388880.

The previous prime is 27429236069. The next prime is 27429236129. The reversal of 27429236105 is 50163292472.

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 18965972089 + 8463264016 = 137717^2 + 91996^2 .

It is not a de Polignac number, because 27429236105 - 2¹² = 27429232009 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, 2742923606 + ... + 2742923615.

It is an arithmetic number, because the mean of its divisors is an integer number (8228770833).

Almost surely, 2^27429236105 is an apocalyptic number.

It is an amenable number.

27429236105 is a deficient number, since it is larger than the sum of its proper divisors (5485847227).

27429236105 is an equidigital number, since it uses as much as digits as its factorization.

27429236105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5485847226.

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 27429236105 in words is "twenty-seven billion, four hundred twenty-nine million, two hundred thirty-six thousand, one hundred five".