65447741632 has 224 divisors, whose sum is σ = 172184592384. Its totient is φ = 23965286400.

The previous prime is 65447741591. The next prime is 65447741657. The reversal of 65447741632 is 23614774456.

It is a tau number, because it is divible by the number of its divisors (224).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4144632 + ... + 4160392.

It is an arithmetic number, because the mean of its divisors is an integer number (768681216).

Almost surely, 2^65447741632 is an apocalyptic number.

65447741632 is a gapful number since it is divisible by the number (62) 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 65447741632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86092296192).

65447741632 is an abundant number, since it is smaller than the sum of its proper divisors (106736850752).

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

65447741632 is a wasteful number, since it uses less digits than its factorization.

65447741632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15847 (or 15837 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 49.

The spelling of 65447741632 in words is "sixty-five billion, four hundred forty-seven million, seven hundred forty-one thousand, six hundred thirty-two".