65111443561216 has 216 divisors, whose sum is σ = 145166372814960. Its totient is φ = 28973539860480.

The previous prime is 65111443561201. The next prime is 65111443561223. The reversal of 65111443561216 is 61216534411156.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 860280111 + ... + 860355793.

It is an arithmetic number, because the mean of its divisors is an integer number (672066540810).

Almost surely, 2^{65111443561216} 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 65111443561216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72583186407480).

65111443561216 is an abundant number, since it is smaller than the sum of its proper divisors (80054929253744).

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

65111443561216 is a wasteful number, since it uses less digits than its factorization.

65111443561216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76043 (or 75998 counting only the distinct ones).

The product of its digits is 518400, while the sum is 46.

The spelling of 65111443561216 in words is "sixty-five trillion, one hundred eleven billion, four hundred forty-three million, five hundred sixty-one thousand, two hundred sixteen".