5665344435665 has 8 divisors (see below), whose sum is σ = 6865724346408. Its totient is φ = 4487401532800.

The previous prime is 5665344435649. The next prime is 5665344435743.

It is a happy number.

5665344435665 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 1444998730561 + 4220345705104 = 1202081^2 + 2054348^2 .

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

It is not a de Polignac number, because 5665344435665 - 2⁴ = 5665344435649 is a prime.

It is a super-2 number, since 2×5665344435665² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5665344435598 and 5665344435607.

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, 5609251412 + ... + 5609252421.

It is an arithmetic number, because the mean of its divisors is an integer number (858215543301).

Almost surely, 2^{5665344435665} is an apocalyptic number.

It is an amenable number.

5665344435665 is a deficient number, since it is larger than the sum of its proper divisors (1200379910743).

5665344435665 is a wasteful number, since it uses less digits than its factorization.

5665344435665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11218503939.

The product of its digits is 466560000, while the sum is 62.

The spelling of 5665344435665 in words is "five trillion, six hundred sixty-five billion, three hundred forty-four million, four hundred thirty-five thousand, six hundred sixty-five".