65215442444505 has 16 divisors (see below), whose sum is σ = 104344953784704. Its totient is φ = 34781487345920.

The previous prime is 65215442444501. The next prime is 65215442444531. The reversal of 65215442444505 is 50544424451256.

65215442444505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 65215442444505 - 2² = 65215442444501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65215442444501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1753297 + ... + 11554433.

It is an arithmetic number, because the mean of its divisors is an integer number (6521559611544).

Almost surely, 2^{65215442444505} is an apocalyptic number.

It is an amenable number.

65215442444505 is a deficient number, since it is larger than the sum of its proper divisors (39129511340199).

65215442444505 is a wasteful number, since it uses less digits than its factorization.

65215442444505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10244736.

The product of its (nonzero) digits is 15360000, while the sum is 51.

The spelling of 65215442444505 in words is "sixty-five trillion, two hundred fifteen billion, four hundred forty-two million, four hundred forty-four thousand, five hundred five".