55110660243 has 4 divisors (see below), whose sum is σ = 73480880328. Its totient is φ = 36740440160.

The previous prime is 55110660221. The next prime is 55110660263. The reversal of 55110660243 is 34206601155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55110660243 - 2⁹ = 55110659731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55110660263) 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 3 ways as a sum of consecutive naturals, for example, 9185110038 + ... + 9185110043.

It is an arithmetic number, because the mean of its divisors is an integer number (18370220082).

Almost surely, 2^55110660243 is an apocalyptic number.

55110660243 is a deficient number, since it is larger than the sum of its proper divisors (18370220085).

55110660243 is a wasteful number, since it uses less digits than its factorization.

55110660243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18370220084.

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 55110660243 in words is "fifty-five billion, one hundred ten million, six hundred sixty thousand, two hundred forty-three".