65738448216 has 72 divisors (see below), whose sum is σ = 207109663020. Its totient is φ = 18782412768.

The previous prime is 65738448173. The next prime is 65738448241. The reversal of 65738448216 is 61284483756.

It is a happy number.

65738448216 is a `hidden beast` number, since 6 + 5 + 7 + 384 + 48 + 216 = 666.

65738448216 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 (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9313146 + ... + 9320201.

Almost surely, 2^65738448216 is an apocalyptic number.

It is an amenable number.

65738448216 is an abundant number, since it is smaller than the sum of its proper divisors (141371214804).

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

65738448216 is a wasteful number, since it uses less digits than its factorization.

65738448216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18633373 (or 18633359 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 54.

It can be divided in two parts, 657384 and 48216, that added together give a square (705600 = 840²).

The spelling of 65738448216 in words is "sixty-five billion, seven hundred thirty-eight million, four hundred forty-eight thousand, two hundred sixteen".