68183654389 has 2 divisors, whose sum is σ = 68183654390. Its totient is φ = 68183654388.

The previous prime is 68183654339. The next prime is 68183654489. The reversal of 68183654389 is 98345638186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61223089489 + 6960564900 = 247433^2 + 83430^2 .

It is a cyclic number.

It is not a de Polignac number, because 68183654389 - 2¹³ = 68183646197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68183654339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34091827194 + 34091827195.

It is an arithmetic number, because the mean of its divisors is an integer number (34091827195).

Almost surely, 2^68183654389 is an apocalyptic number.

It is an amenable number.

68183654389 is a deficient number, since it is larger than the sum of its proper divisors (1).

68183654389 is an equidigital number, since it uses as much as digits as its factorization.

68183654389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29859840, while the sum is 61.

The spelling of 68183654389 in words is "sixty-eight billion, one hundred eighty-three million, six hundred fifty-four thousand, three hundred eighty-nine".