68143375869 has 16 divisors (see below), whose sum is σ = 92618240832. Its totient is φ = 44549568128.

The previous prime is 68143375843. The next prime is 68143375913. The reversal of 68143375869 is 96857334186.

It is a cyclic number.

It is not a de Polignac number, because 68143375869 - 2²⁰ = 68142327293 is a prime.

It is a super-2 number, since 2×68143375869² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68143375829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216577 + ... + 428009.

It is an arithmetic number, because the mean of its divisors is an integer number (5788640052).

Almost surely, 2^68143375869 is an apocalyptic number.

It is an amenable number.

68143375869 is a deficient number, since it is larger than the sum of its proper divisors (24474864963).

68143375869 is a wasteful number, since it uses less digits than its factorization.

68143375869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213516.

The product of its digits is 26127360, while the sum is 60.

The spelling of 68143375869 in words is "sixty-eight billion, one hundred forty-three million, three hundred seventy-five thousand, eight hundred sixty-nine".