55505666165 has 8 divisors (see below), whose sum is σ = 66660135000. Its totient is φ = 44368975872.

The previous prime is 55505666071. The next prime is 55505666171. The reversal of 55505666165 is 56166650555.

It can be written as a sum of positive squares in 4 ways, for example, as 9202373041 + 46303293124 = 95929^2 + 215182^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 55505666165 - 2⁸ = 55505665909 is a prime.

It is a congruent 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, 4437764 + ... + 4450253.

It is an arithmetic number, because the mean of its divisors is an integer number (8332516875).

Almost surely, 2^55505666165 is an apocalyptic number.

It is an amenable number.

55505666165 is a deficient number, since it is larger than the sum of its proper divisors (11154468835).

55505666165 is a wasteful number, since it uses less digits than its factorization.

55505666165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8889271.

The product of its (nonzero) digits is 4050000, while the sum is 50.

The spelling of 55505666165 in words is "fifty-five billion, five hundred five million, six hundred sixty-six thousand, one hundred sixty-five".