64320894000 has 960 divisors, whose sum is σ = 263496385152. Its totient is φ = 14450688000.

The previous prime is 64320893977. The next prime is 64320894061. The reversal of 64320894000 is 49802346.

It is a happy number.

64320894000 is a `hidden beast` number, since 6 + 43 + 208 + 9 + 400 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 326501902 + ... + 326502098.

Almost surely, 2^64320894000 is an apocalyptic number.

64320894000 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 64320894000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131748192576).

64320894000 is an abundant number, since it is smaller than the sum of its proper divisors (199175491152).

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

64320894000 is a wasteful number, since it uses less digits than its factorization.

64320894000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 64320894000 in words is "sixty-four billion, three hundred twenty million, eight hundred ninety-four thousand".