68309574643 has 8 divisors (see below), whose sum is σ = 69042013712. Its totient is φ = 67577711616.

The previous prime is 68309574631. The next prime is 68309574691. The reversal of 68309574643 is 34647590386.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68309574643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68301574643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96571 + ... + 382027.

It is an arithmetic number, because the mean of its divisors is an integer number (8630251714).

Almost surely, 2^68309574643 is an apocalyptic number.

68309574643 is a deficient number, since it is larger than the sum of its proper divisors (732439069).

68309574643 is a wasteful number, since it uses less digits than its factorization.

68309574643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288021.

The product of its (nonzero) digits is 13063680, while the sum is 55.

The spelling of 68309574643 in words is "sixty-eight billion, three hundred nine million, five hundred seventy-four thousand, six hundred forty-three".