68446517791 has 8 divisors (see below), whose sum is σ = 68724326880. Its totient is φ = 68168798208.

The previous prime is 68446517761. The next prime is 68446517827. The reversal of 68446517791 is 19771564486.

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 68446517791 - 2⁵ = 68446517759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68446517761) 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, 1812955 + ... + 1850323.

It is an arithmetic number, because the mean of its divisors is an integer number (8590540860).

Almost surely, 2^68446517791 is an apocalyptic number.

68446517791 is a deficient number, since it is larger than the sum of its proper divisors (277809089).

68446517791 is a wasteful number, since it uses less digits than its factorization.

68446517791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44753.

The product of its digits is 10160640, while the sum is 58.

The spelling of 68446517791 in words is "sixty-eight billion, four hundred forty-six million, five hundred seventeen thousand, seven hundred ninety-one".