64350911040 has 448 divisors, whose sum is σ = 232026439680. Its totient is φ = 14998855680.

The previous prime is 64350911029. The next prime is 64350911047. The reversal of 64350911040 is 4011905346.

It is a junction number, because it is equal to n+sod(n) for n = 64350910992 and 64350911010.

It is not an unprimeable number, because it can be changed into a prime (64350911047) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18181591 + ... + 18185129.

It is an arithmetic number, because the mean of its divisors is an integer number (517916160).

Almost surely, 2^64350911040 is an apocalyptic number.

64350911040 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 64350911040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116013219840).

64350911040 is an abundant number, since it is smaller than the sum of its proper divisors (167675528640).

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

64350911040 is a wasteful number, since it uses less digits than its factorization.

64350911040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3650 (or 3640 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The spelling of 64350911040 in words is "sixty-four billion, three hundred fifty million, nine hundred eleven thousand, forty".