68043517147 has 32 divisors (see below), whose sum is σ = 72626222592. Its totient is φ = 63618153984.

The previous prime is 68043517121. The next prime is 68043517183. The reversal of 68043517147 is 74171534086.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68043517147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68043517097 and 68043517106.

It is not an unprimeable number, because it can be changed into a prime (68043517447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85374153 + ... + 85374949.

It is an arithmetic number, because the mean of its divisors is an integer number (2269569456).

Almost surely, 2^68043517147 is an apocalyptic number.

68043517147 is a deficient number, since it is larger than the sum of its proper divisors (4582705445).

68043517147 is a wasteful number, since it uses less digits than its factorization.

68043517147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347.

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 68043517147 in words is "sixty-eight billion, forty-three million, five hundred seventeen thousand, one hundred forty-seven".