54781338447 has 16 divisors (see below), whose sum is σ = 88535496960. Its totient is φ = 33200811000.

The previous prime is 54781338421. The next prime is 54781338449. The reversal of 54781338447 is 74483318745.

54781338447 is a `hidden beast` number, since 547 + 8 + 13 + 3 + 84 + 4 + 7 = 666.

54781338447 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 54781338447 - 2¹⁰ = 54781337423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54781338393 and 54781338402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54781338449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92224179 + ... + 92224772.

It is an arithmetic number, because the mean of its divisors is an integer number (5533468560).

Almost surely, 2^54781338447 is an apocalyptic number.

54781338447 is a deficient number, since it is larger than the sum of its proper divisors (33754158513).

54781338447 is a wasteful number, since it uses less digits than its factorization.

54781338447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184448971 (or 184448965 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 54.

The spelling of 54781338447 in words is "fifty-four billion, seven hundred eighty-one million, three hundred thirty-eight thousand, four hundred forty-seven".