65507328432 has 720 divisors, whose sum is σ = 245719868160. Its totient is φ = 15895885824.

The previous prime is 65507328421. The next prime is 65507328457. The reversal of 65507328432 is 23482370556.

65507328432 is a `hidden beast` number, since 6 + 5 + 507 + 32 + 84 + 32 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 119757183 + ... + 119757729.

Almost surely, 2^65507328432 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 65507328432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122859934080).

65507328432 is an abundant number, since it is smaller than the sum of its proper divisors (180212539728).

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

65507328432 is a wasteful number, since it uses less digits than its factorization.

65507328432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650 (or 628 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 45.

Adding to 65507328432 its reverse (23482370556), we get a palindrome (88989698988).

The spelling of 65507328432 in words is "sixty-five billion, five hundred seven million, three hundred twenty-eight thousand, four hundred thirty-two".