64833533072 has 240 divisors, whose sum is σ = 167031880704. Its totient is φ = 24060960000.

The previous prime is 64833533071. The next prime is 64833533203. The reversal of 64833533072 is 27033533846.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (64833533071) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61686947 + ... + 61687997.

Almost surely, 2^64833533072 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 64833533072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83515940352).

64833533072 is an abundant number, since it is smaller than the sum of its proper divisors (102198347632).

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

64833533072 is a wasteful number, since it uses less digits than its factorization.

64833533072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418 (or 1405 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 44.

The spelling of 64833533072 in words is "sixty-four billion, eight hundred thirty-three million, five hundred thirty-three thousand, seventy-two".