27479193156 has 72 divisors (see below), whose sum is σ = 73583153280. Its totient is φ = 8622334656.

The previous prime is 27479193151. The next prime is 27479193221. The reversal of 27479193156 is 65139197472.

27479193156 is a `hidden beast` number, since 2 + 7 + 479 + 19 + 3 + 156 = 666.

It is not an unprimeable number, because it can be changed into a prime (27479193151) 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 23 ways as a sum of consecutive naturals, for example, 20556 + ... + 235331.

It is an arithmetic number, because the mean of its divisors is an integer number (1021988240).

Almost surely, 2^27479193156 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 27479193156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36791576640).

27479193156 is an abundant number, since it is smaller than the sum of its proper divisors (46103960124).

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

27479193156 is a wasteful number, since it uses less digits than its factorization.

27479193156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256073 (or 256068 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The spelling of 27479193156 in words is "twenty-seven billion, four hundred seventy-nine million, one hundred ninety-three thousand, one hundred fifty-six".