64943449120 has 288 divisors, whose sum is σ = 175991175360. Its totient is φ = 22601779200.

The previous prime is 64943449099. The next prime is 64943449133. The reversal of 64943449120 is 2194434946.

64943449120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73548199 + ... + 73549081.

It is an arithmetic number, because the mean of its divisors is an integer number (611080470).

Almost surely, 2^64943449120 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 64943449120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87995587680).

64943449120 is an abundant number, since it is smaller than the sum of its proper divisors (111047726240).

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

64943449120 is a wasteful number, since it uses less digits than its factorization.

64943449120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080 (or 1061 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 46.

The spelling of 64943449120 in words is "sixty-four billion, nine hundred forty-three million, four hundred forty-nine thousand, one hundred twenty".