3995216064 has 168 divisors, whose sum is σ = 13169960960. Its totient is φ = 1134300672.

The previous prime is 3995216063. The next prime is 3995216101. The reversal of 3995216064 is 4606125993.

3995216064 is a `hidden beast` number, since 3 + 9 + 9 + 521 + 60 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is not an unprimeable number, because it can be changed into a prime (3995216063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 654177 + ... + 660255.

Almost surely, 2^3995216064 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 3995216064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6584980480).

3995216064 is an abundant number, since it is smaller than the sum of its proper divisors (9174744896).

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

3995216064 is a wasteful number, since it uses less digits than its factorization.

3995216064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6267 (or 6254 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 3995216064 is about 63207.7215536203. The cubic root of 3995216064 is about 1586.7679640935.

The spelling of 3995216064 in words is "three billion, nine hundred ninety-five million, two hundred sixteen thousand, sixty-four".