55144168893 has 18 divisors (see below), whose sum is σ = 87552130302. Its totient is φ = 33420707760.

The previous prime is 55144168879. The next prime is 55144168927. The reversal of 55144168893 is 39886144155.

It is a happy number.

55144168893 is a `hidden beast` number, since 5 + 51 + 441 + 68 + 8 + 93 = 666.

It can be written as a sum of positive squares in only one way, i.e., 41604984729 + 13539184164 = 203973^2 + 116358^2 .

It is not a de Polignac number, because 55144168893 - 2⁵ = 55144168861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55144168823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 25317630 + ... + 25319807.

It is an arithmetic number, because the mean of its divisors is an integer number (4864007239).

Almost surely, 2^55144168893 is an apocalyptic number.

It is an amenable number.

55144168893 is a deficient number, since it is larger than the sum of its proper divisors (32407961409).

55144168893 is a wasteful number, since it uses less digits than its factorization.

55144168893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50637465 (or 50637451 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 54.

The spelling of 55144168893 in words is "fifty-five billion, one hundred forty-four million, one hundred sixty-eight thousand, eight hundred ninety-three".