67845061789 has 4 divisors (see below), whose sum is σ = 68662472256. Its totient is φ = 67027651324.

The previous prime is 67845061741. The next prime is 67845061793. The reversal of 67845061789 is 98716054876.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67845061789 - 2²³ = 67836673181 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 (67845011789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408705109 + ... + 408705274.

It is an arithmetic number, because the mean of its divisors is an integer number (17165618064).

Almost surely, 2^67845061789 is an apocalyptic number.

It is an amenable number.

67845061789 is a deficient number, since it is larger than the sum of its proper divisors (817410467).

67845061789 is an equidigital number, since it uses as much as digits as its factorization.

67845061789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817410466.

The product of its (nonzero) digits is 20321280, while the sum is 61.

The spelling of 67845061789 in words is "sixty-seven billion, eight hundred forty-five million, sixty-one thousand, seven hundred eighty-nine".