27539228672 has 108 divisors (see below), whose sum is σ = 58418381385. Its totient is φ = 12977307648.

The previous prime is 27539228671. The next prime is 27539228701. The reversal of 27539228672 is 27682293572.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 25569289216 + 1969939456 = 159904^2 + 44384^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=117344.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27539228671) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 142690208 + ... + 142690400.

Almost surely, 2^27539228672 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 27539228672

27539228672 is an abundant number, since it is smaller than the sum of its proper divisors (30879152713).

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

27539228672 is an frugal number, since it uses more digits than its factorization.

27539228672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 214 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 53.

The spelling of 27539228672 in words is "twenty-seven billion, five hundred thirty-nine million, two hundred twenty-eight thousand, six hundred seventy-two".