5205111639 has 32 divisors (see below), whose sum is σ = 8681777664. Its totient is φ = 2700535680.

The previous prime is 5205111599. The next prime is 5205111647. The reversal of 5205111639 is 9361115025.

It is not a de Polignac number, because 5205111639 - 2¹⁷ = 5204980567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5205111239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139629 + ... + 172934.

It is an arithmetic number, because the mean of its divisors is an integer number (271305552).

Almost surely, 2^5205111639 is an apocalyptic number.

5205111639 is a deficient number, since it is larger than the sum of its proper divisors (3476666025).

5205111639 is a wasteful number, since it uses less digits than its factorization.

5205111639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312647.

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 5205111639 is about 72146.4596428681. The cubic root of 5205111639 is about 1733.0457044638.

The spelling of 5205111639 in words is "five billion, two hundred five million, one hundred eleven thousand, six hundred thirty-nine".