55066565617 has 8 divisors (see below), whose sum is σ = 62970316416. Its totient is φ = 47172089472.

The previous prime is 55066565599. The next prime is 55066565623. The reversal of 55066565617 is 71656566055.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55066565617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55066560617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2305933 + ... + 2329690.

It is an arithmetic number, because the mean of its divisors is an integer number (7871289552).

Almost surely, 2^55066565617 is an apocalyptic number.

It is an amenable number.

55066565617 is a deficient number, since it is larger than the sum of its proper divisors (7903750799).

55066565617 is a wasteful number, since it uses less digits than its factorization.

55066565617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4637327.

The product of its (nonzero) digits is 5670000, while the sum is 52.

The spelling of 55066565617 in words is "fifty-five billion, sixty-six million, five hundred sixty-five thousand, six hundred seventeen".