65218850565630 has 32 divisors (see below), whose sum is σ = 156537354432384. Its totient is φ = 17390347586976.

The previous prime is 65218850565593. The next prime is 65218850565643. The reversal of 65218850565630 is 3656505881256.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83724424 + ... + 84499803.

It is an arithmetic number, because the mean of its divisors is an integer number (4891792326012).

Almost surely, 2^{65218850565630} is an apocalyptic number.

65218850565630 is an abundant number, since it is smaller than the sum of its proper divisors (91318503866754).

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

65218850565630 is a wasteful number, since it uses less digits than its factorization.

65218850565630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168237160.

The product of its (nonzero) digits is 51840000, while the sum is 60.

The spelling of 65218850565630 in words is "sixty-five trillion, two hundred eighteen billion, eight hundred fifty million, five hundred sixty-five thousand, six hundred thirty".