53209649617729 has 16 divisors (see below), whose sum is σ = 59842401252480. Its totient is φ = 46886091701760.

The previous prime is 53209649617717. The next prime is 53209649617801. The reversal of 53209649617729 is 92771694690235.

It is a cyclic number.

It is not a de Polignac number, because 53209649617729 - 2²⁵ = 53209616063297 is a prime.

It is a super-2 number, since 2×53209649617729² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53209649617129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248440944 + ... + 248655025.

It is an arithmetic number, because the mean of its divisors is an integer number (3740150078280).

Almost surely, 2^{53209649617729} is an apocalyptic number.

It is an amenable number.

53209649617729 is a deficient number, since it is larger than the sum of its proper divisors (6632751634751).

53209649617729 is a wasteful number, since it uses less digits than its factorization.

53209649617729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497096280.

The product of its (nonzero) digits is 308629440, while the sum is 70.

The spelling of 53209649617729 in words is "fifty-three trillion, two hundred nine billion, six hundred forty-nine million, six hundred seventeen thousand, seven hundred twenty-nine".