27449665536 has 96 divisors (see below), whose sum is σ = 77486310720. Its totient is φ = 8611627008.

The previous prime is 27449665531. The next prime is 27449665619. The reversal of 27449665536 is 63556694472.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (27449665531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26956 + ... + 235851.

It is an arithmetic number, because the mean of its divisors is an integer number (807149070).

Almost surely, 2^27449665536 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 27449665536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38743155360).

27449665536 is an abundant number, since it is smaller than the sum of its proper divisors (50036645184).

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

27449665536 is a wasteful number, since it uses less digits than its factorization.

27449665536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262849 (or 262829 counting only the distinct ones).

The product of its digits is 32659200, while the sum is 57.

The spelling of 27449665536 in words is "twenty-seven billion, four hundred forty-nine million, six hundred sixty-five thousand, five hundred thirty-six".