65243025616540 has 12 divisors (see below), whose sum is σ = 137010353794776. Its totient is φ = 26097210246608.

The previous prime is 65243025616459. The next prime is 65243025616553. The reversal of 65243025616540 is 4561652034256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1631075640394 + ... + 1631075640433.

It is an arithmetic number, because the mean of its divisors is an integer number (11417529482898).

Almost surely, 2^{65243025616540} is an apocalyptic number.

It is an amenable number.

65243025616540 is an abundant number, since it is smaller than the sum of its proper divisors (71767328178236).

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

65243025616540 is a wasteful number, since it uses less digits than its factorization.

65243025616540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3262151280836 (or 3262151280834 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 49.

The spelling of 65243025616540 in words is "sixty-five trillion, two hundred forty-three billion, twenty-five million, six hundred sixteen thousand, five hundred forty".