65305067520 has 1440 divisors, whose sum is σ = 290467658880. Its totient is φ = 12331253760.

The previous prime is 65305067501. The next prime is 65305067551. The reversal of 65305067520 is 2576050356.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2251898866 + ... + 2251898894.

It is an arithmetic number, because the mean of its divisors is an integer number (201713652).

Almost surely, 2^65305067520 is an apocalyptic number.

65305067520 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 65305067520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145233829440).

65305067520 is an abundant number, since it is smaller than the sum of its proper divisors (225162591360).

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

65305067520 is a wasteful number, since it uses less digits than its factorization.

65305067520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 39.

The spelling of 65305067520 in words is "sixty-five billion, three hundred five million, sixty-seven thousand, five hundred twenty".