54811811845 has 24 divisors (see below), whose sum is σ = 76634287488. Its totient is φ = 37525572000.

The previous prime is 54811811843. The next prime is 54811811869.

54811811845 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 54811811845 - 2¹ = 54811811843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54811811795 and 54811811804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54811811843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22681 + ... + 331870.

It is an arithmetic number, because the mean of its divisors is an integer number (3193095312).

Almost surely, 2^54811811845 is an apocalyptic number.

It is an amenable number.

54811811845 is a deficient number, since it is larger than the sum of its proper divisors (21822475643).

54811811845 is a wasteful number, since it uses less digits than its factorization.

54811811845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355201 (or 355194 counting only the distinct ones).

The product of its digits is 204800, while the sum is 46.

The spelling of 54811811845 in words is "fifty-four billion, eight hundred eleven million, eight hundred eleven thousand, eight hundred forty-five".