65409528688 has 40 divisors (see below), whose sum is σ = 144860851328. Its totient is φ = 28027726272.

The previous prime is 65409528683. The next prime is 65409528689. The reversal of 65409528688 is 88682590456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65409528683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 628495 + ... + 725137.

Almost surely, 2^65409528688 is an apocalyptic number.

It is an amenable number.

65409528688 is an abundant number, since it is smaller than the sum of its proper divisors (79451322640).

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

65409528688 is a wasteful number, since it uses less digits than its factorization.

65409528688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102701 (or 102695 counting only the distinct ones).

The product of its (nonzero) digits is 33177600, while the sum is 61.

The spelling of 65409528688 in words is "sixty-five billion, four hundred nine million, five hundred twenty-eight thousand, six hundred eighty-eight".