65216901376 has 81 divisors (see below), whose sum is σ = 143188050439. Its totient is φ = 29623616000.

The previous prime is 65216901361. The next prime is 65216901383. The reversal of 65216901376 is 67310961256.

The square root of 65216901376 is 255376.

It is a perfect power (a square), and thus also a powerful number.

65216901376 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 44945451 + ... + 44946901.

Almost surely, 2^65216901376 is an apocalyptic number.

65216901376 is the 255376-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65216901376

65216901376 is an abundant number, since it is smaller than the sum of its proper divisors (77971149063).

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

65216901376 is an frugal number, since it uses more digits than its factorization.

65216901376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2940 (or 1464 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 46.

The spelling of 65216901376 in words is "sixty-five billion, two hundred sixteen million, nine hundred one thousand, three hundred seventy-six".