544453123405 has 4 divisors (see below), whose sum is σ = 653343748092. Its totient is φ = 435562498720.

The previous prime is 544453123391. The next prime is 544453123477. The reversal of 544453123405 is 504321354445.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504321354445 = 5 ⋅100864270889.

It can be written as a sum of positive squares in 2 ways, for example, as 80393797444 + 464059325961 = 283538^2 + 681219^2 .

It is not a de Polignac number, because 544453123405 - 2¹¹ = 544453121357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54445312336 + ... + 54445312345.

It is an arithmetic number, because the mean of its divisors is an integer number (163335937023).

Almost surely, 2^544453123405 is an apocalyptic number.

It is an amenable number.

544453123405 is a deficient number, since it is larger than the sum of its proper divisors (108890624687).

544453123405 is a wasteful number, since it uses less digits than its factorization.

544453123405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108890624686.

The product of its (nonzero) digits is 576000, while the sum is 40.

The spelling of 544453123405 in words is "five hundred forty-four billion, four hundred fifty-three million, one hundred twenty-three thousand, four hundred five".