64715948688 has 80 divisors (see below), whose sum is σ = 172644950016. Its totient is φ = 20867756160.

The previous prime is 64715948681. The next prime is 64715948711. The reversal of 64715948688 is 88684951746.

It is not an unprimeable number, because it can be changed into a prime (64715948681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4491031 + ... + 4505417.

Almost surely, 2^64715948688 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 64715948688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86322475008).

64715948688 is an abundant number, since it is smaller than the sum of its proper divisors (107929001328).

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

64715948688 is a wasteful number, since it uses less digits than its factorization.

64715948688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17452 (or 17446 counting only the distinct ones).

The product of its digits is 92897280, while the sum is 66.

The spelling of 64715948688 in words is "sixty-four billion, seven hundred fifteen million, nine hundred forty-eight thousand, six hundred eighty-eight".