65898784896 has 128 divisors (see below), whose sum is σ = 200143224960. Its totient is φ = 18819440640.

The previous prime is 65898784891. The next prime is 65898784901. The reversal of 65898784896 is 69848789856.

It is an interprime number because it is at equal distance from previous prime (65898784891) and next prime (65898784901).

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (65898784891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7675326 + ... + 7683906.

It is an arithmetic number, because the mean of its divisors is an integer number (1563618945).

Almost surely, 2^65898784896 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 65898784896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100071612480).

65898784896 is an abundant number, since it is smaller than the sum of its proper divisors (134244440064).

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

65898784896 is a wasteful number, since it uses less digits than its factorization.

65898784896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11462 (or 11450 counting only the distinct ones).

The product of its digits is 1672151040, while the sum is 78.

The spelling of 65898784896 in words is "sixty-five billion, eight hundred ninety-eight million, seven hundred eighty-four thousand, eight hundred ninety-six".