68843042169 has 16 divisors (see below), whose sum is σ = 101341787904. Its totient is φ = 41220366800.

The previous prime is 68843042161. The next prime is 68843042173. The reversal of 68843042169 is 96124034886.

It is a cyclic number.

It is not a de Polignac number, because 68843042169 - 2³ = 68843042161 is a prime.

It is a super-2 number, since 2×68843042169² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68843042161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12564447 + ... + 12569924.

It is an arithmetic number, because the mean of its divisors is an integer number (6333861744).

Almost surely, 2^68843042169 is an apocalyptic number.

It is an amenable number.

68843042169 is a deficient number, since it is larger than the sum of its proper divisors (32498745735).

68843042169 is a wasteful number, since it uses less digits than its factorization.

68843042169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25134468.

The product of its (nonzero) digits is 1990656, while the sum is 51.

The spelling of 68843042169 in words is "sixty-eight billion, eight hundred forty-three million, forty-two thousand, one hundred sixty-nine".