13720316247 has 96 divisors (see below), whose sum is σ = 23577960960. Its totient is φ = 7805445120.

The previous prime is 13720316243. The next prime is 13720316263. The reversal of 13720316247 is 74261302731.

13720316247 is a `hidden beast` number, since 1 + 3 + 7 + 20 + 3 + 1 + 624 + 7 = 666.

It is not a de Polignac number, because 13720316247 - 2² = 13720316243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13720316243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23778423 + ... + 23778999.

It is an arithmetic number, because the mean of its divisors is an integer number (245603760).

Almost surely, 2^13720316247 is an apocalyptic number.

13720316247 is a deficient number, since it is larger than the sum of its proper divisors (9857644713).

13720316247 is a wasteful number, since it uses less digits than its factorization.

13720316247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738 (or 673 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

Adding to 13720316247 its reverse (74261302731), we get a palindrome (87981618978).

The spelling of 13720316247 in words is "thirteen billion, seven hundred twenty million, three hundred sixteen thousand, two hundred forty-seven".