54778543118 has 16 divisors (see below), whose sum is σ = 91342882176. Its totient is φ = 24466842720.

The previous prime is 54778543117. The next prime is 54778543129. The reversal of 54778543118 is 81134587745.

It is a happy number.

It is a super-2 number, since 2×54778543118² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 54778543118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54778543117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33980921 + ... + 33982532.

It is an arithmetic number, because the mean of its divisors is an integer number (5708930136).

Almost surely, 2^54778543118 is an apocalyptic number.

54778543118 is a deficient number, since it is larger than the sum of its proper divisors (36564339058).

54778543118 is a wasteful number, since it uses less digits than its factorization.

54778543118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67963499.

The product of its digits is 3763200, while the sum is 53.

The spelling of 54778543118 in words is "fifty-four billion, seven hundred seventy-eight million, five hundred forty-three thousand, one hundred eighteen".