68843549651 has 2 divisors, whose sum is σ = 68843549652. Its totient is φ = 68843549650.

The previous prime is 68843549629. The next prime is 68843549657. The reversal of 68843549651 is 15694534886.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68843549651 - 2¹⁴ = 68843533267 is a prime.

It is not a weakly prime, because it can be changed into another prime (68843549657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34421774825 + 34421774826.

It is an arithmetic number, because the mean of its divisors is an integer number (34421774826).

Almost surely, 2^68843549651 is an apocalyptic number.

68843549651 is a deficient number, since it is larger than the sum of its proper divisors (1).

68843549651 is an equidigital number, since it uses as much as digits as its factorization.

68843549651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24883200, while the sum is 59.

The spelling of 68843549651 in words is "sixty-eight billion, eight hundred forty-three million, five hundred forty-nine thousand, six hundred fifty-one".