444720244865461 has 16 divisors (see below), whose sum is σ = 457127079737328. Its totient is φ = 432387729164800.

The previous prime is 444720244865447. The next prime is 444720244865471. The reversal of 444720244865461 is 164568442027444.

It can be written as a sum of positive squares in 8 ways, for example, as 9731866724836 + 434988378140625 = 3119594^2 + 20856375^2 .

It is a cyclic number.

It is not a de Polignac number, because 444720244865461 - 2⁷ = 444720244865333 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 444720244865461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444720244865471) 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, 1528833171 + ... + 1529124031.

It is an arithmetic number, because the mean of its divisors is an integer number (28570442483583).

Almost surely, 2^{444720244865461} is an apocalyptic number.

444720244865461 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

444720244865461 is a deficient number, since it is larger than the sum of its proper divisors (12406834871867).

444720244865461 is a wasteful number, since it uses less digits than its factorization.

444720244865461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418472.

The product of its (nonzero) digits is 165150720, while the sum is 61.

The spelling of 444720244865461 in words is "four hundred forty-four trillion, seven hundred twenty billion, two hundred forty-four million, eight hundred sixty-five thousand, four hundred sixty-one".