27287668044 has 192 divisors, whose sum is σ = 87845882880. Its totient is φ = 7132769280.

The previous prime is 27287668043. The next prime is 27287668087. The reversal of 27287668044 is 44086678272.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (27287668043) 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 63 ways as a sum of consecutive naturals, for example, 1098279 + ... + 1122849.

It is an arithmetic number, because the mean of its divisors is an integer number (457530640).

Almost surely, 2^27287668044 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 27287668044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43922941440).

27287668044 is an abundant number, since it is smaller than the sum of its proper divisors (60558214836).

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

27287668044 is a wasteful number, since it uses less digits than its factorization.

27287668044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24717 (or 24709 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 54.

The spelling of 27287668044 in words is "twenty-seven billion, two hundred eighty-seven million, six hundred sixty-eight thousand, forty-four".