64328140480 has 112 divisors (see below), whose sum is σ = 159007430016. Its totient is φ = 24770580480.

The previous prime is 64328140469. The next prime is 64328140493. The reversal of 64328140480 is 8404182346.

It is a happy number.

It is a super-2 number, since 2×64328140480² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 882382 + ... + 952498.

Almost surely, 2^64328140480 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 64328140480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79503715008).

64328140480 is an abundant number, since it is smaller than the sum of its proper divisors (94679289536).

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

64328140480 is a wasteful number, since it uses less digits than its factorization.

64328140480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70242 (or 70232 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The spelling of 64328140480 in words is "sixty-four billion, three hundred twenty-eight million, one hundred forty thousand, four hundred eighty".