64385215488 has 264 divisors, whose sum is σ = 213492601920. Its totient is φ = 18483240960.

The previous prime is 64385215463. The next prime is 64385215493. The reversal of 64385215488 is 88451258346.

64385215488 is a `hidden beast` number, since 6 + 4 + 38 + 521 + 5 + 4 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (264).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1909431 + ... + 1942857.

Almost surely, 2^64385215488 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 64385215488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106746300960).

64385215488 is an abundant number, since it is smaller than the sum of its proper divisors (149107386432).

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

64385215488 is a wasteful number, since it uses less digits than its factorization.

64385215488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33483 (or 33462 counting only the distinct ones).

The product of its digits is 7372800, while the sum is 54.

The spelling of 64385215488 in words is "sixty-four billion, three hundred eighty-five million, two hundred fifteen thousand, four hundred eighty-eight".