444471551102661 has 16 divisors (see below), whose sum is σ = 627051947394240. Its totient is φ = 279264372433920.

The previous prime is 444471551102651. The next prime is 444471551102669. The reversal of 444471551102661 is 166201155174444.

It is not a de Polignac number, because 444471551102661 - 2³⁵ = 444437191364293 is a prime.

It is a super-2 number, since 2×444471551102661² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444471551102669) 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, 20201404830 + ... + 20201426831.

It is an arithmetic number, because the mean of its divisors is an integer number (39190746712140).

Almost surely, 2^{444471551102661} is an apocalyptic number.

It is an amenable number.

444471551102661 is a deficient number, since it is larger than the sum of its proper divisors (182580396291579).

444471551102661 is a wasteful number, since it uses less digits than its factorization.

444471551102661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40402831876.

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 444471551102661 in words is "four hundred forty-four trillion, four hundred seventy-one billion, five hundred fifty-one million, one hundred two thousand, six hundred sixty-one".