444663466686654 has 32 divisors (see below), whose sum is σ = 910024490626944. Its totient is φ = 144771680380320.

The previous prime is 444663466686653. The next prime is 444663466686707. The reversal of 444663466686654 is 456686664366444.

It is a self number, because there is not a number n which added to its sum of digits gives 444663466686654.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444663466686653) 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, 460449 + ... + 29825139.

It is an arithmetic number, because the mean of its divisors is an integer number (28438265332092).

Almost surely, 2^{444663466686654} is an apocalyptic number.

444663466686654 is an abundant number, since it is smaller than the sum of its proper divisors (465361023940290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

444663466686654 is a wasteful number, since it uses less digits than its factorization.

444663466686654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29423432.

The product of its digits is 34398535680, while the sum is 78.

The spelling of 444663466686654 in words is "four hundred forty-four trillion, six hundred sixty-three billion, four hundred sixty-six million, six hundred eighty-six thousand, six hundred fifty-four".