67878720002843 has 4 divisors (see below), whose sum is σ = 68808565482408. Its totient is φ = 66948874523280.

The previous prime is 67878720002839. The next prime is 67878720002861. The reversal of 67878720002843 is 34820002787876.

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 67878720002843 - 2² = 67878720002839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67878720002803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464922739673 + ... + 464922739818.

It is an arithmetic number, because the mean of its divisors is an integer number (17202141370602).

Almost surely, 2^{67878720002843} is an apocalyptic number.

67878720002843 is a deficient number, since it is larger than the sum of its proper divisors (929845479565).

67878720002843 is an equidigital number, since it uses as much as digits as its factorization.

67878720002843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929845479564.

The product of its (nonzero) digits is 50577408, while the sum is 62.

The spelling of 67878720002843 in words is "sixty-seven trillion, eight hundred seventy-eight billion, seven hundred twenty million, two thousand, eight hundred forty-three".