27320674565 has 8 divisors (see below), whose sum is σ = 32790219768. Its totient is φ = 21852932800.

The previous prime is 27320674547. The next prime is 27320674643. The reversal of 27320674565 is 56547602372.

It can be written as a sum of positive squares in 4 ways, for example, as 905648836 + 26415025729 = 30094^2 + 162527^2 .

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

It is not a de Polignac number, because 27320674565 - 2³⁰ = 26246932741 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417302 + ... + 478311.

It is an arithmetic number, because the mean of its divisors is an integer number (4098777471).

Almost surely, 2^27320674565 is an apocalyptic number.

It is an amenable number.

27320674565 is a deficient number, since it is larger than the sum of its proper divisors (5469545203).

27320674565 is an equidigital number, since it uses as much as digits as its factorization.

27320674565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901719.

The product of its (nonzero) digits is 2116800, while the sum is 47.

The spelling of 27320674565 in words is "twenty-seven billion, three hundred twenty million, six hundred seventy-four thousand, five hundred sixty-five".