5105681439 has 4 divisors (see below), whose sum is σ = 6807575256. Its totient is φ = 3403787624.

The previous prime is 5105681429. The next prime is 5105681453. The reversal of 5105681439 is 9341865015.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5105681439 - 2¹⁹ = 5105157151 is a prime.

It is a super-2 number, since 2×5105681439² = 52135965913098221442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5105681439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5105681429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 850946904 + ... + 850946909.

It is an arithmetic number, because the mean of its divisors is an integer number (1701893814).

Almost surely, 2^5105681439 is an apocalyptic number.

5105681439 is a deficient number, since it is larger than the sum of its proper divisors (1701893817).

5105681439 is a wasteful number, since it uses less digits than its factorization.

5105681439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701893816.

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 5105681439 is about 71454.0512427392. The cubic root of 5105681439 is about 1721.9395642072.

The spelling of 5105681439 in words is "five billion, one hundred five million, six hundred eighty-one thousand, four hundred thirty-nine".