64220240064 has 28 divisors (see below), whose sum is σ = 169916052344. Its totient is φ = 21406746624.

The previous prime is 64220240041. The next prime is 64220240099. The reversal of 64220240064 is 46004202246.

64220240064 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 3 ways as a sum of consecutive naturals, for example, 167240017 + ... + 167240400.

Almost surely, 2^64220240064 is an apocalyptic number.

64220240064 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

64220240064 is an abundant number, since it is smaller than the sum of its proper divisors (105695812280).

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

64220240064 is a wasteful number, since it uses less digits than its factorization.

64220240064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334480432 (or 334480422 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

The spelling of 64220240064 in words is "sixty-four billion, two hundred twenty million, two hundred forty thousand, sixty-four".