440543212065 has 48 divisors (see below), whose sum is σ = 836665053120. Its totient is φ = 212663917440.

The previous prime is 440543212061. The next prime is 440543212079. The reversal of 440543212065 is 560212345044.

440543212065 is a `hidden beast` number, since 4 + 40 + 5 + 432 + 120 + 65 = 666.

It is not a de Polignac number, because 440543212065 - 2² = 440543212061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (440543212061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1829847 + ... + 2056556.

It is an arithmetic number, because the mean of its divisors is an integer number (17430521940).

Almost surely, 2^440543212065 is an apocalyptic number.

440543212065 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

440543212065 is a deficient number, since it is larger than the sum of its proper divisors (396121841055).

440543212065 is a wasteful number, since it uses less digits than its factorization.

440543212065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3886654 (or 3886651 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The spelling of 440543212065 in words is "four hundred forty billion, five hundred forty-three million, two hundred twelve thousand, sixty-five".