444664466687 has 16 divisors (see below), whose sum is σ = 520183183872. Its totient is φ = 372150586080.

The previous prime is 444664466657. The next prime is 444664466711. The reversal of 444664466687 is 786664466444.

It is not a de Polignac number, because 444664466687 - 2¹² = 444664462591 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 (444664466657) 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, 640262 + ... + 1139852.

It is an arithmetic number, because the mean of its divisors is an integer number (32511448992).

Almost surely, 2^444664466687 is an apocalyptic number.

444664466687 is a deficient number, since it is larger than the sum of its proper divisors (75518717185).

444664466687 is a wasteful number, since it uses less digits than its factorization.

444664466687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502598.

The product of its digits is 445906944, while the sum is 65.

The spelling of 444664466687 in words is "four hundred forty-four billion, six hundred sixty-four million, four hundred sixty-six thousand, six hundred eighty-seven".