27265309568 has 128 divisors (see below), whose sum is σ = 63395317440. Its totient is φ = 11438899200.

The previous prime is 27265309541. The next prime is 27265309651. The reversal of 27265309568 is 86590356272.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12733778 + ... + 12735918.

Almost surely, 2^27265309568 is an apocalyptic number.

27265309568 is a gapful number since it is divisible by the number (28) 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 27265309568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31697658720).

27265309568 is an abundant number, since it is smaller than the sum of its proper divisors (36130007872).

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

27265309568 is a wasteful number, since it uses less digits than its factorization.

27265309568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2456 (or 2444 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 53.

The spelling of 27265309568 in words is "twenty-seven billion, two hundred sixty-five million, three hundred nine thousand, five hundred sixty-eight".