544451814661 has 16 divisors (see below), whose sum is σ = 589013040384. Its totient is φ = 501293297664.

The previous prime is 544451814659. The next prime is 544451814691. The reversal of 544451814661 is 166418154445.

It is a cyclic number.

It is not a de Polignac number, because 544451814661 - 2¹ = 544451814659 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 (544451814691) 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, 1605541 + ... + 1914853.

It is an arithmetic number, because the mean of its divisors is an integer number (36813315024).

Almost surely, 2^544451814661 is an apocalyptic number.

It is an amenable number.

544451814661 is a deficient number, since it is larger than the sum of its proper divisors (44561225723).

544451814661 is a wasteful number, since it uses less digits than its factorization.

544451814661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311580.

The product of its digits is 1843200, while the sum is 49.

The spelling of 544451814661 in words is "five hundred forty-four billion, four hundred fifty-one million, eight hundred fourteen thousand, six hundred sixty-one".