27400044065 has 8 divisors (see below), whose sum is σ = 33205598568. Its totient is φ = 21703004800.

The previous prime is 27400044043. The next prime is 27400044071. The reversal of 27400044065 is 56044000472.

It can be written as a sum of positive squares in 4 ways, for example, as 1952137489 + 25447906576 = 44183^2 + 159524^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27400044065 - 2³² = 23105076769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 27128252 + ... + 27129261.

It is an arithmetic number, because the mean of its divisors is an integer number (4150699821).

Almost surely, 2^27400044065 is an apocalyptic number.

It is an amenable number.

27400044065 is a deficient number, since it is larger than the sum of its proper divisors (5805554503).

27400044065 is a wasteful number, since it uses less digits than its factorization.

27400044065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54257619.

The product of its (nonzero) digits is 26880, while the sum is 32.

The spelling of 27400044065 in words is "twenty-seven billion, four hundred million, forty-four thousand, sixty-five".