54393944481 has 12 divisors (see below), whose sum is σ = 83190738852. Its totient is φ = 34129533696.

The previous prime is 54393944443. The next prime is 54393944531. The reversal of 54393944481 is 18444939345.

54393944481 is a `hidden beast` number, since 5 + 439 + 3 + 94 + 44 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 32127336081 + 22266608400 = 179241^2 + 149220^2 .

It is not a de Polignac number, because 54393944481 - 2¹⁸ = 54393682337 is a prime.

It is a super-2 number, since 2×54393944481² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54393944441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 177757836 + ... + 177758141.

It is an arithmetic number, because the mean of its divisors is an integer number (6932561571).

Almost surely, 2^54393944481 is an apocalyptic number.

54393944481 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

54393944481 is a deficient number, since it is larger than the sum of its proper divisors (28796794371).

54393944481 is a wasteful number, since it uses less digits than its factorization.

54393944481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355516000 (or 355515997 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 54.

The spelling of 54393944481 in words is "fifty-four billion, three hundred ninety-three million, nine hundred forty-four thousand, four hundred eighty-one".