68664667384143 has 6 divisors (see below), whose sum is σ = 99182297332664. Its totient is φ = 45776444922756.

The previous prime is 68664667384111. The next prime is 68664667384241. The reversal of 68664667384143 is 34148376646686.

68664667384143 is a `hidden beast` number, since 6 + 8 + 6 + 6 + 46 + 67 + 384 + 143 = 666.

It is not a de Polignac number, because 68664667384143 - 2⁵ = 68664667384111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68664667380143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3814703743555 + ... + 3814703743572.

Almost surely, 2^{68664667384143} is an apocalyptic number.

68664667384143 is a deficient number, since it is larger than the sum of its proper divisors (30517629948521).

68664667384143 is a wasteful number, since it uses less digits than its factorization.

68664667384143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7629407487133 (or 7629407487130 counting only the distinct ones).

The product of its digits is 2006581248, while the sum is 72.

The spelling of 68664667384143 in words is "sixty-eight trillion, six hundred sixty-four billion, six hundred sixty-seven million, three hundred eighty-four thousand, one hundred forty-three".