53705205309 has 24 divisors (see below), whose sum is σ = 83783998272. Its totient is φ = 29974976640.

The previous prime is 53705205259. The next prime is 53705205329. The reversal of 53705205309 is 90350250735.

It is not a de Polignac number, because 53705205309 - 2⁷ = 53705205181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53705205329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 652732 + ... + 730389.

It is an arithmetic number, because the mean of its divisors is an integer number (3490999928).

Almost surely, 2^53705205309 is an apocalyptic number.

It is an amenable number.

53705205309 is a deficient number, since it is larger than the sum of its proper divisors (30078792963).

53705205309 is a wasteful number, since it uses less digits than its factorization.

53705205309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383217 (or 1383174 counting only the distinct ones).

The product of its (nonzero) digits is 141750, while the sum is 39.

The spelling of 53705205309 in words is "fifty-three billion, seven hundred five million, two hundred five thousand, three hundred nine".