65180344320 has 1344 divisors, whose sum is σ = 291968651520. Its totient is φ = 13079937024.

The previous prime is 65180344289. The next prime is 65180344357. The reversal of 65180344320 is 2344308156.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 972840927 + ... + 972840993.

It is an arithmetic number, because the mean of its divisors is an integer number (217238580).

Almost surely, 2^65180344320 is an apocalyptic number.

65180344320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65180344320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145984325760).

65180344320 is an abundant number, since it is smaller than the sum of its proper divisors (226788307200).

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

65180344320 is a wasteful number, since it uses less digits than its factorization.

65180344320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 65180344320 in words is "sixty-five billion, one hundred eighty million, three hundred forty-four thousand, three hundred twenty".