64337705532 has 72 divisors (see below), whose sum is σ = 171496066560. Its totient is φ = 20280961440.

The previous prime is 64337705507. The next prime is 64337705539. The reversal of 64337705532 is 23550773346.

64337705532 is a `hidden beast` number, since 6 + 43 + 3 + 7 + 70 + 5 + 532 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64337705539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 301557 + ... + 468627.

Almost surely, 2^64337705532 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 64337705532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85748033280).

64337705532 is an abundant number, since it is smaller than the sum of its proper divisors (107158361028).

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

64337705532 is a wasteful number, since it uses less digits than its factorization.

64337705532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167663 (or 167658 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 45.

The spelling of 64337705532 in words is "sixty-four billion, three hundred thirty-seven million, seven hundred five thousand, five hundred thirty-two".