444673321507760 has 160 divisors (see below), whose sum is σ = 1051704466939392. Its totient is φ = 174818397173760.

The previous prime is 444673321507759. The next prime is 444673321507783. The reversal of 444673321507760 is 67705123376444.

It is a self number, because there is not a number n which added to its sum of digits gives 444673321507760.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1965146147 + ... + 1965372413.

Almost surely, 2^{444673321507760} is an apocalyptic number.

444673321507760 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 444673321507760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (525852233469696).

444673321507760 is an abundant number, since it is smaller than the sum of its proper divisors (607031145431632).

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

444673321507760 is a wasteful number, since it uses less digits than its factorization.

444673321507760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227531 (or 227525 counting only the distinct ones).

The product of its (nonzero) digits is 71124480, while the sum is 59.

The spelling of 444673321507760 in words is "four hundred forty-four trillion, six hundred seventy-three billion, three hundred twenty-one million, five hundred seven thousand, seven hundred sixty".