55165660664 has 8 divisors (see below), whose sum is σ = 103435613760. Its totient is φ = 27582830328.

The previous prime is 55165660661. The next prime is 55165660681. The reversal of 55165660664 is 46606656155.

It is a tau number, because it is divible by the number of its divisors (8).

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 (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3447853784 + ... + 3447853799.

It is an arithmetic number, because the mean of its divisors is an integer number (12929451720).

Almost surely, 2^55165660664 is an apocalyptic number.

It is an amenable number.

55165660664 is a deficient number, since it is larger than the sum of its proper divisors (48269953096).

55165660664 is a wasteful number, since it uses less digits than its factorization.

55165660664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6895707589 (or 6895707585 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 50.

The spelling of 55165660664 in words is "fifty-five billion, one hundred sixty-five million, six hundred sixty thousand, six hundred sixty-four".