27000144864 has 288 divisors, whose sum is σ = 100767663360. Its totient is φ = 6643814400.

The previous prime is 27000144841. The next prime is 27000144869. The reversal of 27000144864 is 46844100072.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27000144869) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 389304 + ... + 453384.

It is an arithmetic number, because the mean of its divisors is an integer number (349887720).

Almost surely, 2^27000144864 is an apocalyptic number.

27000144864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27000144864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50383831680).

27000144864 is an abundant number, since it is smaller than the sum of its proper divisors (73767518496).

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

27000144864 is a wasteful number, since it uses less digits than its factorization.

27000144864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64134 (or 64123 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The spelling of 27000144864 in words is "twenty-seven billion, one hundred forty-four thousand, eight hundred sixty-four".