65005065500 has 96 divisors (see below), whose sum is σ = 145186449408. Its totient is φ = 25414632000.

The previous prime is 65005065493. The next prime is 65005065527. The reversal of 65005065500 is 556050056.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24227159 + ... + 24229841.

It is an arithmetic number, because the mean of its divisors is an integer number (1512358848).

Almost surely, 2^65005065500 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 65005065500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72593224704).

65005065500 is an abundant number, since it is smaller than the sum of its proper divisors (80181383908).

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

65005065500 is a wasteful number, since it uses less digits than its factorization.

65005065500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3780 (or 3768 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 32.

The spelling of 65005065500 in words is "sixty-five billion, five million, sixty-five thousand, five hundred".