65216446784407 has 8 divisors (see below), whose sum is σ = 65581142711040. Its totient is φ = 64851754838520.

The previous prime is 65216446784399. The next prime is 65216446784441. The reversal of 65216446784407 is 70448764461256.

65216446784407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 65216446784407 - 2³ = 65216446784399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65216446784107) 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 7 ways as a sum of consecutive naturals, for example, 35617698 + ... + 37403920.

It is an arithmetic number, because the mean of its divisors is an integer number (8197642838880).

Almost surely, 2^{65216446784407} is an apocalyptic number.

65216446784407 is a deficient number, since it is larger than the sum of its proper divisors (364695926633).

65216446784407 is a wasteful number, since it uses less digits than its factorization.

65216446784407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990373.

The product of its (nonzero) digits is 216760320, while the sum is 64.

The spelling of 65216446784407 in words is "sixty-five trillion, two hundred sixteen billion, four hundred forty-six million, seven hundred eighty-four thousand, four hundred seven".