27551338056 has 576 divisors, whose sum is σ = 92263691520. Its totient is φ = 7632455040.

The previous prime is 27551338043. The next prime is 27551338079. The reversal of 27551338056 is 65083315572.

27551338056 is a `hidden beast` number, since 2 + 7 + 5 + 513 + 3 + 80 + 56 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 331943791 + ... + 331943873.

It is an arithmetic number, because the mean of its divisors is an integer number (160180020).

Almost surely, 2^27551338056 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 27551338056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46131845760).

27551338056 is an abundant number, since it is smaller than the sum of its proper divisors (64712353464).

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

27551338056 is a wasteful number, since it uses less digits than its factorization.

27551338056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The spelling of 27551338056 in words is "twenty-seven billion, five hundred fifty-one million, three hundred thirty-eight thousand, fifty-six".