55166550655517 has 8 divisors (see below), whose sum is σ = 63189805849536. Its totient is φ = 47178875308032.

The previous prime is 55166550655511. The next prime is 55166550655519. The reversal of 55166550655517 is 71555605566155.

55166550655517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55166550655517 - 2¹⁴ = 55166550639133 is a prime.

It is a super-2 number, since 2×55166550655517² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55166550655517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55166550655511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8894958308 + ... + 8894964509.

It is an arithmetic number, because the mean of its divisors is an integer number (7898725731192).

Almost surely, 2^{55166550655517} is an apocalyptic number.

It is an amenable number.

55166550655517 is a deficient number, since it is larger than the sum of its proper divisors (8023255194019).

55166550655517 is a wasteful number, since it uses less digits than its factorization.

55166550655517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17789923267.

The product of its (nonzero) digits is 118125000, while the sum is 62.

The spelling of 55166550655517 in words is "fifty-five trillion, one hundred sixty-six billion, five hundred fifty million, six hundred fifty-five thousand, five hundred seventeen".