64065500928 has 432 divisors, whose sum is σ = 218030912736. Its totient is φ = 17836277760.

The previous prime is 64065500927. The next prime is 64065500971. The reversal of 64065500928 is 82900556046.

64065500928 is a `hidden beast` number, since 6 + 4 + 0 + 6 + 550 + 0 + 92 + 8 = 666.

It is a super-2 number, since 2×64065500928² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64065500923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 111031776 + ... + 111032352.

Almost surely, 2^64065500928 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 64065500928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109015456368).

64065500928 is an abundant number, since it is smaller than the sum of its proper divisors (153965411808).

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

64065500928 is a wasteful number, since it uses less digits than its factorization.

64065500928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960 (or 943 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 64065500928 in words is "sixty-four billion, sixty-five million, five hundred thousand, nine hundred twenty-eight".