55165660663 has 8 divisors (see below), whose sum is σ = 56534010896. Its totient is φ = 53801193600.

The previous prime is 55165660661. The next prime is 55165660681. The reversal of 55165660663 is 36606656155.

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 55165660663 - 2¹ = 55165660661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55165660661) 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, 942018 + ... + 998863.

It is an arithmetic number, because the mean of its divisors is an integer number (7066751362).

Almost surely, 2^55165660663 is an apocalyptic number.

55165660663 is a deficient number, since it is larger than the sum of its proper divisors (1368350233).

55165660663 is a wasteful number, since it uses less digits than its factorization.

55165660663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941585.

The product of its (nonzero) digits is 2916000, while the sum is 49.

The spelling of 55165660663 in words is "fifty-five billion, one hundred sixty-five million, six hundred sixty thousand, six hundred sixty-three".