27644053356 has 72 divisors (see below), whose sum is σ = 73227733040. Its totient is φ = 9018549504.

The previous prime is 27644053331. The next prime is 27644053357. The reversal of 27644053356 is 65335044672.

27644053356 is a `hidden beast` number, since 2 + 7 + 64 + 4 + 0 + 533 + 56 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27644053357) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 180636 + ... + 296508.

Almost surely, 2^27644053356 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 27644053356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36613866520).

27644053356 is an abundant number, since it is smaller than the sum of its proper divisors (45583679684).

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

27644053356 is a wasteful number, since it uses less digits than its factorization.

27644053356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115980 (or 115925 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 45.

The spelling of 27644053356 in words is "twenty-seven billion, six hundred forty-four million, fifty-three thousand, three hundred fifty-six".