65305440065616 has 80 divisors (see below), whose sum is σ = 181076566857984. Its totient is φ = 20207323901952.

The previous prime is 65305440065597. The next prime is 65305440065639. The reversal of 65305440065616 is 61656004450356.

It is a Harshad number since it is a multiple of its sum of digits (51).

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, 548099176 + ... + 548218311.

Almost surely, 2^{65305440065616} is an apocalyptic number.

It is an amenable number.

65305440065616 is an abundant number, since it is smaller than the sum of its proper divisors (115771126792368).

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

65305440065616 is a wasteful number, since it uses less digits than its factorization.

65305440065616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096317588 (or 1096317582 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 51.

The spelling of 65305440065616 in words is "sixty-five trillion, three hundred five billion, four hundred forty million, sixty-five thousand, six hundred sixteen".