65005694844 has 12 divisors (see below), whose sum is σ = 151679954664. Its totient is φ = 21668564944.

The previous prime is 65005694839. The next prime is 65005694849. The reversal of 65005694844 is 44849650056.

It is an interprime number because it is at equal distance from previous prime (65005694839) and next prime (65005694849).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65005694849) 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 3 ways as a sum of consecutive naturals, for example, 2708570607 + ... + 2708570630.

It is an arithmetic number, because the mean of its divisors is an integer number (12639996222).

Almost surely, 2^65005694844 is an apocalyptic number.

It is an amenable number.

65005694844 is an abundant number, since it is smaller than the sum of its proper divisors (86674259820).

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

65005694844 is a wasteful number, since it uses less digits than its factorization.

65005694844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5417141244 (or 5417141242 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 51.

The spelling of 65005694844 in words is "sixty-five billion, five million, six hundred ninety-four thousand, eight hundred forty-four".