544405663543 has 8 divisors (see below), whose sum is σ = 624392059680. Its totient is φ = 464972807040.

The previous prime is 544405663519. The next prime is 544405663567. The reversal of 544405663543 is 345366504445.

It is an interprime number because it is at equal distance from previous prime (544405663519) and next prime (544405663567).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 544405663543 - 2¹⁷ = 544405532471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (544405663513) 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 7 ways as a sum of consecutive naturals, for example, 138382798 + ... + 138386731.

It is an arithmetic number, because the mean of its divisors is an integer number (78049007460).

Almost surely, 2^544405663543 is an apocalyptic number.

544405663543 is a deficient number, since it is larger than the sum of its proper divisors (79986396137).

544405663543 is a wasteful number, since it uses less digits than its factorization.

544405663543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276769817.

The product of its (nonzero) digits is 10368000, while the sum is 49.

The spelling of 544405663543 in words is "five hundred forty-four billion, four hundred five million, six hundred sixty-three thousand, five hundred forty-three".