55605216065 has 8 divisors (see below), whose sum is σ = 76258582080. Its totient is φ = 38129290992.

The previous prime is 55605216031. The next prime is 55605216083. The reversal of 55605216065 is 56061250655.

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 55605216065 - 2¹⁶ = 55605150529 is a prime.

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, 794360195 + ... + 794360264.

It is an arithmetic number, because the mean of its divisors is an integer number (9532322760).

Almost surely, 2^55605216065 is an apocalyptic number.

It is an amenable number.

55605216065 is a deficient number, since it is larger than the sum of its proper divisors (20653366015).

55605216065 is a wasteful number, since it uses less digits than its factorization.

55605216065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588720471.

The product of its (nonzero) digits is 270000, while the sum is 41.

The spelling of 55605216065 in words is "fifty-five billion, six hundred five million, two hundred sixteen thousand, sixty-five".