27405434112 has 144 divisors (see below), whose sum is σ = 83920099200. Its totient is φ = 7777345536.

The previous prime is 27405434107. The next prime is 27405434113. The reversal of 27405434112 is 21143450472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27405434113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 783918 + ... + 818130.

Almost surely, 2^27405434112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27405434112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41960049600).

27405434112 is an abundant number, since it is smaller than the sum of its proper divisors (56514665088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27405434112 is a wasteful number, since it uses less digits than its factorization.

27405434112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34388 (or 34374 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

Adding to 27405434112 its reverse (21143450472), we get a palindrome (48548884584).

The spelling of 27405434112 in words is "twenty-seven billion, four hundred five million, four hundred thirty-four thousand, one hundred twelve".