64865326616064 has 240 divisors, whose sum is σ = 201637498686624. Its totient is φ = 19955460096000.

The previous prime is 64865326616059. The next prime is 64865326616099. The reversal of 64865326616064 is 46061662356846.

64865326616064 is a `hidden beast` number, since 6 + 4 + 8 + 6 + 5 + 3 + 2 + 6 + 616 + 0 + 6 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 64865326615992 and 64865326616010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 401335909 + ... + 401497499.

Almost surely, 2^{64865326616064} is an apocalyptic number.

64865326616064 is a gapful number since it is divisible by the number (64) 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 64865326616064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100818749343312).

64865326616064 is an abundant number, since it is smaller than the sum of its proper divisors (136772172070560).

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

64865326616064 is a wasteful number, since it uses less digits than its factorization.

64865326616064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168329 (or 168310 counting only the distinct ones).

The product of its (nonzero) digits is 179159040, while the sum is 63.

The spelling of 64865326616064 in words is "sixty-four trillion, eight hundred sixty-five billion, three hundred twenty-six million, six hundred sixteen thousand, sixty-four".