64533387360 has 192 divisors, whose sum is σ = 221378754240. Its totient is φ = 15706521600.

The previous prime is 64533387313. The next prime is 64533387383. The reversal of 64533387360 is 6378333546.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 497260 + ... + 613460.

It is an arithmetic number, because the mean of its divisors is an integer number (1153014345).

Almost surely, 2^64533387360 is an apocalyptic number.

64533387360 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 64533387360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110689377120).

64533387360 is an abundant number, since it is smaller than the sum of its proper divisors (156845366880).

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

64533387360 is a wasteful number, since it uses less digits than its factorization.

64533387360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116321 (or 116313 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 48.

The spelling of 64533387360 in words is "sixty-four billion, five hundred thirty-three million, three hundred eighty-seven thousand, three hundred sixty".