65213788368 has 80 divisors (see below), whose sum is σ = 171747936000. Its totient is φ = 21318535680.

The previous prime is 65213788351. The next prime is 65213788379. The reversal of 65213788368 is 86388731256.

65213788368 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 507298 + ... + 622718.

It is an arithmetic number, because the mean of its divisors is an integer number (2146849200).

Almost surely, 2^65213788368 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 65213788368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85873968000).

65213788368 is an abundant number, since it is smaller than the sum of its proper divisors (106534147632).

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

65213788368 is a wasteful number, since it uses less digits than its factorization.

65213788368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115660 (or 115654 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 57.

The spelling of 65213788368 in words is "sixty-five billion, two hundred thirteen million, seven hundred eighty-eight thousand, three hundred sixty-eight".