65642212716 has 12 divisors (see below), whose sum is σ = 153165163032. Its totient is φ = 21880737568.

The previous prime is 65642212711. The next prime is 65642212747. The reversal of 65642212716 is 61721224656.

65642212716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (65642212711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2735092185 + ... + 2735092208.

It is an arithmetic number, because the mean of its divisors is an integer number (12763763586).

Almost surely, 2^65642212716 is an apocalyptic number.

It is an amenable number.

65642212716 is an abundant number, since it is smaller than the sum of its proper divisors (87522950316).

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

65642212716 is a wasteful number, since it uses less digits than its factorization.

65642212716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5470184400 (or 5470184398 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The spelling of 65642212716 in words is "sixty-five billion, six hundred forty-two million, two hundred twelve thousand, seven hundred sixteen".