55545240343123 has 16 divisors (see below), whose sum is σ = 58911054022656. Its totient is φ = 52258679051040.

The previous prime is 55545240343049. The next prime is 55545240343141. The reversal of 55545240343123 is 32134304254555.

It is not a de Polignac number, because 55545240343123 - 2⁹ = 55545240342611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55545240343183) 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 15 ways as a sum of consecutive naturals, for example, 190953090 + ... + 191243752.

It is an arithmetic number, because the mean of its divisors is an integer number (3681940876416).

Almost surely, 2^{55545240343123} is an apocalyptic number.

55545240343123 is a deficient number, since it is larger than the sum of its proper divisors (3365813679533).

55545240343123 is a wasteful number, since it uses less digits than its factorization.

55545240343123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426954.

The product of its (nonzero) digits is 4320000, while the sum is 46.

Adding to 55545240343123 its reverse (32134304254555), we get a palindrome (87679544597678).

The spelling of 55545240343123 in words is "fifty-five trillion, five hundred forty-five billion, two hundred forty million, three hundred forty-three thousand, one hundred twenty-three".