64331280800 has 72 divisors (see below), whose sum is σ = 157628786112. Its totient is φ = 25637472000.

The previous prime is 64331280787. The next prime is 64331280809. The reversal of 64331280800 is 808213346.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (64331280809) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 68435 + ... + 365165.

It is an arithmetic number, because the mean of its divisors is an integer number (2189288696).

Almost surely, 2^64331280800 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64331280800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78814393056).

64331280800 is an abundant number, since it is smaller than the sum of its proper divisors (93297505312).

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

64331280800 is a wasteful number, since it uses less digits than its factorization.

64331280800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297022 (or 297009 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 64331280800 in words is "sixty-four billion, three hundred thirty-one million, two hundred eighty thousand, eight hundred".