68615243369 has 8 divisors (see below), whose sum is σ = 70474103688. Its totient is φ = 66756614400.

The previous prime is 68615243363. The next prime is 68615243377. The reversal of 68615243369 is 96334251686.

It can be written as a sum of positive squares in 4 ways, for example, as 82810000 + 68532433369 = 9100^2 + 261787^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68615243369 - 2⁴ = 68615243353 is a prime.

It is a super-2 number, since 2×68615243369² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68615243369.

It is not an unprimeable number, because it can be changed into a prime (68615243363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663569 + ... + 759969.

It is an arithmetic number, because the mean of its divisors is an integer number (8809262961).

Almost surely, 2^68615243369 is an apocalyptic number.

It is an amenable number.

68615243369 is a deficient number, since it is larger than the sum of its proper divisors (1858860319).

68615243369 is a wasteful number, since it uses less digits than its factorization.

68615243369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115675.

The product of its digits is 5598720, while the sum is 53.

The spelling of 68615243369 in words is "sixty-eight billion, six hundred fifteen million, two hundred forty-three thousand, three hundred sixty-nine".