65304510640660 has 24 divisors (see below), whose sum is σ = 138791755148256. Its totient is φ = 25807083722400.

The previous prime is 65304510640571. The next prime is 65304510640673. The reversal of 65304510640660 is 6604601540356.

It is a happy number.

It is a super-2 number, since 2×65304510640660² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65304510640660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19670031666 + ... + 19670034985.

It is an arithmetic number, because the mean of its divisors is an integer number (5782989797844).

Almost surely, 2^{65304510640660} is an apocalyptic number.

It is an amenable number.

65304510640660 is an abundant number, since it is smaller than the sum of its proper divisors (73487244507596).

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

65304510640660 is a wasteful number, since it uses less digits than its factorization.

65304510640660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39340066743 (or 39340066741 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 65304510640660 in words is "sixty-five trillion, three hundred four billion, five hundred ten million, six hundred forty thousand, six hundred sixty".