65109309732480 has 256 divisors, whose sum is σ = 223582659148800. Its totient is φ = 16020995899392.

The previous prime is 65109309732463. The next prime is 65109309732499. The reversal of 65109309732480 is 8423790390156.

65109309732480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 65109309732480.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67386552 + ... + 68345928.

It is an arithmetic number, because the mean of its divisors is an integer number (873369762300).

It is a 1-persistent number, because it is pandigital, but 2⋅65109309732480 = 130218619464960 is not.

Almost surely, 2^{65109309732480} is an apocalyptic number.

65109309732480 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 65109309732480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111791329574400).

65109309732480 is an abundant number, since it is smaller than the sum of its proper divisors (158473349416320).

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

65109309732480 is a wasteful number, since it uses less digits than its factorization.

65109309732480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962131 (or 962119 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 57.

The spelling of 65109309732480 in words is "sixty-five trillion, one hundred nine billion, three hundred nine million, seven hundred thirty-two thousand, four hundred eighty".