65434243456 has 64 divisors (see below), whose sum is σ = 133489097280. Its totient is φ = 31932246528.

The previous prime is 65434243453. The next prime is 65434243471.

It is a happy number.

65434243456 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65434243453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8951355 + ... + 8958661.

It is an arithmetic number, because the mean of its divisors is an integer number (2085767145).

Almost surely, 2^65434243456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65434243456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66744548640).

65434243456 is an abundant number, since it is smaller than the sum of its proper divisors (68054853824).

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

65434243456 is a wasteful number, since it uses less digits than its factorization.

65434243456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8991 (or 8979 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 46.

The spelling of 65434243456 in words is "sixty-five billion, four hundred thirty-four million, two hundred forty-three thousand, four hundred fifty-six".