65867530240 has 240 divisors, whose sum is σ = 167825758464. Its totient is φ = 24772608000.

The previous prime is 65867530199. The next prime is 65867530241. The reversal of 65867530240 is 4203576856.

It is not an unprimeable number, because it can be changed into a prime (65867530241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93961890 + ... + 93962590.

Almost surely, 2^65867530240 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 65867530240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83912879232).

65867530240 is an abundant number, since it is smaller than the sum of its proper divisors (101958228224).

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

65867530240 is an equidigital number, since it uses as much as digits as its factorization.

65867530240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802 (or 776 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 46.

The spelling of 65867530240 in words is "sixty-five billion, eight hundred sixty-seven million, five hundred thirty thousand, two hundred forty".