64340865600 has 672 divisors, whose sum is σ = 249647878656. Its totient is φ = 14330265600.

The previous prime is 64340865541. The next prime is 64340865613. The reversal of 64340865600 is 656804346.

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 95 ways as a sum of consecutive naturals, for example, 38595967 + ... + 38597633.

Almost surely, 2^64340865600 is an apocalyptic number.

64340865600 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 64340865600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124823939328).

64340865600 is an abundant number, since it is smaller than the sum of its proper divisors (185307013056).

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

64340865600 is a wasteful number, since it uses less digits than its factorization.

64340865600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1763 (or 1748 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 64340865600 in words is "sixty-four billion, three hundred forty million, eight hundred sixty-five thousand, six hundred".