5681249279 has 4 divisors (see below), whose sum is σ = 5684839776. Its totient is φ = 5677658784.

The previous prime is 5681249237. The next prime is 5681249281. The reversal of 5681249279 is 9729421865.

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 5681249279 - 2²⁸ = 5412813823 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 5681249279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5681249219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1792874 + ... + 1796039.

It is an arithmetic number, because the mean of its divisors is an integer number (1421209944).

Almost surely, 2^5681249279 is an apocalyptic number.

5681249279 is a deficient number, since it is larger than the sum of its proper divisors (3590497).

5681249279 is a wasteful number, since it uses less digits than its factorization.

5681249279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3590496.

The product of its digits is 2177280, while the sum is 53.

The square root of 5681249279 is about 75374.0623755944. The cubic root of 5681249279 is about 1784.3550808049.

The spelling of 5681249279 in words is "five billion, six hundred eighty-one million, two hundred forty-nine thousand, two hundred seventy-nine".