54666440136513 has 20 divisors (see below), whose sum is σ = 81662509886320. Its totient is φ = 36444160949112.

The previous prime is 54666440136493. The next prime is 54666440136527. The reversal of 54666440136513 is 31563104466645.

It is a happy number.

54666440136513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 54666440136513 - 2⁵ = 54666440136481 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54666440136513.

It is not an unprimeable number, because it can be changed into a prime (54666440136593) 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 19 ways as a sum of consecutive naturals, for example, 24506106 + ... + 26643612.

It is an arithmetic number, because the mean of its divisors is an integer number (4083125494316).

Almost surely, 2^{54666440136513} is an apocalyptic number.

It is an amenable number.

54666440136513 is a deficient number, since it is larger than the sum of its proper divisors (26996069749807).

54666440136513 is a wasteful number, since it uses less digits than its factorization.

54666440136513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453258 (or 2453249 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 54.

The spelling of 54666440136513 in words is "fifty-four trillion, six hundred sixty-six billion, four hundred forty million, one hundred thirty-six thousand, five hundred thirteen".