68419388041 has 9 divisors (see below), whose sum is σ = 69220335271. Its totient is φ = 67627612624.

The previous prime is 68419388039. The next prime is 68419388071. The reversal of 68419388041 is 14088391486.

The square root of 68419388041 is 261571.

It is a perfect power (a square), and thus also a powerful number.

68419388041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 13137973641 + 55281414400 = 114621^2 + 235120^2 .

It is not a de Polignac number, because 68419388041 - 2¹ = 68419388039 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 68419388041.

It is not an unprimeable number, because it can be changed into a prime (68419388021) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 23278350 + ... + 23281288.

Almost surely, 2^68419388041 is an apocalyptic number.

68419388041 is the 261571-st square number.

68419388041 is the 130786-th centered octagonal number.

It is an amenable number.

68419388041 is a deficient number, since it is larger than the sum of its proper divisors (800947230).

68419388041 is an frugal number, since it uses more digits than its factorization.

68419388041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6056 (or 3028 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 52.

The spelling of 68419388041 in words is "sixty-eight billion, four hundred nineteen million, three hundred eighty-eight thousand, forty-one".