64529566080 has 384 divisors, whose sum is σ = 240247503360. Its totient is φ = 14689382400.

The previous prime is 64529566063. The next prime is 64529566097. The reversal of 64529566080 is 8066592546.

It is an interprime number because it is at equal distance from previous prime (64529566063) and next prime (64529566097).

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25494415 + ... + 25496945.

It is an arithmetic number, because the mean of its divisors is an integer number (625644540).

Almost surely, 2^64529566080 is an apocalyptic number.

64529566080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64529566080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120123751680).

64529566080 is an abundant number, since it is smaller than the sum of its proper divisors (175717937280).

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

64529566080 is a wasteful number, since it uses less digits than its factorization.

64529566080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2838 (or 2819 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 51.

The spelling of 64529566080 in words is "sixty-four billion, five hundred twenty-nine million, five hundred sixty-six thousand, eighty".