68912102543 has 4 divisors (see below), whose sum is σ = 69686395920. Its totient is φ = 68137809168.

The previous prime is 68912102521. The next prime is 68912102621. The reversal of 68912102543 is 34520121986.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68912102543 - 2¹⁰ = 68912101519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68912102543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68912102143) 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 3 ways as a sum of consecutive naturals, for example, 387146555 + ... + 387146732.

It is an arithmetic number, because the mean of its divisors is an integer number (17421598980).

Almost surely, 2^68912102543 is an apocalyptic number.

68912102543 is a deficient number, since it is larger than the sum of its proper divisors (774293377).

68912102543 is an equidigital number, since it uses as much as digits as its factorization.

68912102543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774293376.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 68912102543 in words is "sixty-eight billion, nine hundred twelve million, one hundred two thousand, five hundred forty-three".