64535324532 has 144 divisors (see below), whose sum is σ = 182032607232. Its totient is φ = 17429359680.

The previous prime is 64535324507. The next prime is 64535324569. The reversal of 64535324532 is 23542353546.

It is a super-2 number, since 2×64535324532² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 15250857 + ... + 15255087.

It is an arithmetic number, because the mean of its divisors is an integer number (1264115328).

Almost surely, 2^64535324532 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 64535324532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91016303616).

64535324532 is an abundant number, since it is smaller than the sum of its proper divisors (117497282700).

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

64535324532 is a wasteful number, since it uses less digits than its factorization.

64535324532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4786 (or 4765 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 42.

The spelling of 64535324532 in words is "sixty-four billion, five hundred thirty-five million, three hundred twenty-four thousand, five hundred thirty-two".