68411111643 has 24 divisors (see below), whose sum is σ = 116575620096. Its totient is φ = 37831028400.

The previous prime is 68411111641. The next prime is 68411111677. The reversal of 68411111643 is 34611111486.

68411111643 is a `hidden beast` number, since 6 + 8 + 4 + 1 + 1 + 1 + 1 + 1 + 643 = 666.

It is not a de Polignac number, because 68411111643 - 2¹ = 68411111641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68411111598 and 68411111607.

It is not an unprimeable number, because it can be changed into a prime (68411111641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17512413 + ... + 17516318.

It is an arithmetic number, because the mean of its divisors is an integer number (4857317504).

Almost surely, 2^68411111643 is an apocalyptic number.

68411111643 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

68411111643 is a deficient number, since it is larger than the sum of its proper divisors (48164508453).

68411111643 is a wasteful number, since it uses less digits than its factorization.

68411111643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35028775 (or 35028772 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The spelling of 68411111643 in words is "sixty-eight billion, four hundred eleven million, one hundred eleven thousand, six hundred forty-three".