65560155216020 has 12 divisors (see below), whose sum is σ = 137676325953684. Its totient is φ = 26224062086400.

The previous prime is 65560155215941. The next prime is 65560155216029. The reversal of 65560155216020 is 2061255106556.

It can be written as a sum of positive squares in 2 ways, for example, as 36417821339524 + 29142333876496 = 6034718^2 + 5398364^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65560155216029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1639003880381 + ... + 1639003880420.

It is an arithmetic number, because the mean of its divisors is an integer number (11473027162807).

Almost surely, 2^{65560155216020} is an apocalyptic number.

It is an amenable number.

65560155216020 is an abundant number, since it is smaller than the sum of its proper divisors (72116170737664).

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

65560155216020 is a wasteful number, since it uses less digits than its factorization.

65560155216020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3278007760810 (or 3278007760808 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 44.

The spelling of 65560155216020 in words is "sixty-five trillion, five hundred sixty billion, one hundred fifty-five million, two hundred sixteen thousand, twenty".