5663720273665 has 16 divisors (see below), whose sum is σ = 6802647008976. Its totient is φ = 4526855424000.

The previous prime is 5663720273647. The next prime is 5663720273693.

5663720273665 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 8 ways, for example, as 1064792844544 + 4598927429121 = 1031888^2 + 2144511^2 .

It is not a de Polignac number, because 5663720273665 - 2¹¹ = 5663720271617 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 15 ways as a sum of consecutive naturals, for example, 49126729 + ... + 49241881.

It is an arithmetic number, because the mean of its divisors is an integer number (425165438061).

Almost surely, 2^{5663720273665} is an apocalyptic number.

It is an amenable number.

5663720273665 is a deficient number, since it is larger than the sum of its proper divisors (1138926735311).

5663720273665 is a wasteful number, since it uses less digits than its factorization.

5663720273665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124020.

The product of its (nonzero) digits is 57153600, while the sum is 58.

The spelling of 5663720273665 in words is "five trillion, six hundred sixty-three billion, seven hundred twenty million, two hundred seventy-three thousand, six hundred sixty-five".