4445564331605 has 8 divisors (see below), whose sum is σ = 5335292056632. Its totient is φ = 3556041559488.

The previous prime is 4445564331599. The next prime is 4445564331613. The reversal of 4445564331605 is 5061334655444.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 101545470244 + 4344018861361 = 318662^2 + 2084231^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4445564331605 - 2²⁸ = 4445295896149 is a prime.

It is a super-2 number, since 2×4445564331605² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51190502 + ... + 51277271.

It is an arithmetic number, because the mean of its divisors is an integer number (666911507079).

Almost surely, 2^{4445564331605} is an apocalyptic number.

It is an amenable number.

4445564331605 is a deficient number, since it is larger than the sum of its proper divisors (889727725027).

4445564331605 is a wasteful number, since it uses less digits than its factorization.

4445564331605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102476455.

The product of its (nonzero) digits is 10368000, while the sum is 50.

The spelling of 4445564331605 in words is "four trillion, four hundred forty-five billion, five hundred sixty-four million, three hundred thirty-one thousand, six hundred five".