65042531312 has 80 divisors (see below), whose sum is σ = 144098777088. Its totient is φ = 28152157440.

The previous prime is 65042531291. The next prime is 65042531327. The reversal of 65042531312 is 21313524056.

It is a happy number.

65042531312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 866678 + ... + 938730.

Almost surely, 2^65042531312 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 65042531312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72049388544).

65042531312 is an abundant number, since it is smaller than the sum of its proper divisors (79056245776).

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

65042531312 is a wasteful number, since it uses less digits than its factorization.

65042531312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72318 (or 72312 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The spelling of 65042531312 in words is "sixty-five billion, forty-two million, five hundred thirty-one thousand, three hundred twelve".