53209649617728 has 28 divisors (see below), whose sum is σ = 140783864614080. Its totient is φ = 17736549872512.

The previous prime is 53209649617717. The next prime is 53209649617801. The reversal of 53209649617728 is 82771694690235.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138566795688 + ... + 138566796071.

It is a 1-persistent number, because it is pandigital, but 2⋅53209649617728 = 106419299235456 is not.

Almost surely, 2^{53209649617728} is an apocalyptic number.

It is an amenable number.

53209649617728 is an abundant number, since it is smaller than the sum of its proper divisors (87574214996352).

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

53209649617728 is a wasteful number, since it uses less digits than its factorization.

53209649617728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277133591774 (or 277133591764 counting only the distinct ones).

The product of its (nonzero) digits is 274337280, while the sum is 69.

The spelling of 53209649617728 in words is "fifty-three trillion, two hundred nine billion, six hundred forty-nine million, six hundred seventeen thousand, seven hundred twenty-eight".