68289487487 has 8 divisors (see below), whose sum is σ = 73552321920. Its totient is φ = 63028052640.

The previous prime is 68289487433. The next prime is 68289487517. The reversal of 68289487487 is 78478498286.

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 68289487487 - 2⁶ = 68289487423 is a prime.

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 68289487487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68289481487) 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, 247439 + ... + 444752.

It is an arithmetic number, because the mean of its divisors is an integer number (9194040240).

Almost surely, 2^68289487487 is an apocalyptic number.

68289487487 is a deficient number, since it is larger than the sum of its proper divisors (5262834433).

68289487487 is a wasteful number, since it uses less digits than its factorization.

68289487487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699793.

The product of its digits is 346816512, while the sum is 71.

The spelling of 68289487487 in words is "sixty-eight billion, two hundred eighty-nine million, four hundred eighty-seven thousand, four hundred eighty-seven".