64000320032 has 24 divisors (see below), whose sum is σ = 137455233552. Its totient is φ = 29091054400.

The previous prime is 64000319993. The next prime is 64000320047. The reversal of 64000320032 is 23002300046.

64000320032 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

64000320032 is a modest number, since divided by 320032 gives 640 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 64000319986 and 64000320013.

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, 90909194 + ... + 90909897.

It is an arithmetic number, because the mean of its divisors is an integer number (5727301398).

Almost surely, 2^64000320032 is an apocalyptic number.

It is an amenable number.

64000320032 is an abundant number, since it is smaller than the sum of its proper divisors (73454913520).

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

64000320032 is a wasteful number, since it uses less digits than its factorization.

64000320032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181819112 (or 181819104 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 64000320032 its reverse (23002300046), we get a palindrome (87002620078).

The spelling of 64000320032 in words is "sixty-four billion, three hundred twenty thousand, thirty-two".