64530809974176 has 384 divisors, whose sum is σ = 216326378257920. Its totient is φ = 16388417912832.

The previous prime is 64530809974171. The next prime is 64530809974187. The reversal of 64530809974176 is 67147990803546.

It is a self number, because there is not a number n which added to its sum of digits gives 64530809974176.

It is not an unprimeable number, because it can be changed into a prime (64530809974171) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 30324420 + ... + 32382588.

It is an arithmetic number, because the mean of its divisors is an integer number (563349943380).

Almost surely, 2^{64530809974176} 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 64530809974176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108163189128960).

64530809974176 is an abundant number, since it is smaller than the sum of its proper divisors (151795568283744).

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

64530809974176 is a wasteful number, since it uses less digits than its factorization.

64530809974176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2058336 (or 2058328 counting only the distinct ones).

The product of its (nonzero) digits is 274337280, while the sum is 69.

The spelling of 64530809974176 in words is "sixty-four trillion, five hundred thirty billion, eight hundred nine million, nine hundred seventy-four thousand, one hundred seventy-six".