544405645679 has 8 divisors (see below), whose sum is σ = 622491020928. Its totient is φ = 466398555480.

The previous prime is 544405645657. The next prime is 544405645697. The reversal of 544405645679 is 976546504445.

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

It is a cyclic number.

It is not a de Polignac number, because 544405645679 - 2¹² = 544405641583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (544405642679) 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, 19556357 + ... + 19584174.

It is an arithmetic number, because the mean of its divisors is an integer number (77811377616).

Almost surely, 2^544405645679 is an apocalyptic number.

544405645679 is a deficient number, since it is larger than the sum of its proper divisors (78085375249).

544405645679 is a wasteful number, since it uses less digits than its factorization.

544405645679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39142525.

The product of its (nonzero) digits is 72576000, while the sum is 59.

The spelling of 544405645679 in words is "five hundred forty-four billion, four hundred five million, six hundred forty-five thousand, six hundred seventy-nine".