444561542463561 has 8 divisors (see below), whose sum is σ = 618520406905920. Its totient is φ = 283488519831792.

The previous prime is 444561542463559. The next prime is 444561542463583. The reversal of 444561542463561 is 165364245165444.

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

It is not a de Polignac number, because 444561542463561 - 2¹ = 444561542463559 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 444561542463495 and 444561542463504.

It is not an unprimeable number, because it can be changed into a prime (444561542462561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3221460452566 + ... + 3221460452703.

It is an arithmetic number, because the mean of its divisors is an integer number (77315050863240).

Almost surely, 2^{444561542463561} is an apocalyptic number.

It is an amenable number.

444561542463561 is a deficient number, since it is larger than the sum of its proper divisors (173958864442359).

444561542463561 is a wasteful number, since it uses less digits than its factorization.

444561542463561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6442920905295.

The product of its digits is 165888000, while the sum is 60.

The spelling of 444561542463561 in words is "four hundred forty-four trillion, five hundred sixty-one billion, five hundred forty-two million, four hundred sixty-three thousand, five hundred sixty-one".