67068418919 has 4 divisors (see below), whose sum is σ = 67408867944. Its totient is φ = 66727969896.

The previous prime is 67068418891. The next prime is 67068418957. The reversal of 67068418919 is 91981486076.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67068418919 is a prime.

It is a super-2 number, since 2×67068418919² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67068418979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170224217 + ... + 170224610.

It is an arithmetic number, because the mean of its divisors is an integer number (16852216986).

Almost surely, 2^67068418919 is an apocalyptic number.

67068418919 is a deficient number, since it is larger than the sum of its proper divisors (340449025).

67068418919 is a wasteful number, since it uses less digits than its factorization.

67068418919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340449024.

The product of its (nonzero) digits is 5225472, while the sum is 59.

The spelling of 67068418919 in words is "sixty-seven billion, sixty-eight million, four hundred eighteen thousand, nine hundred nineteen".