68843649419219 has 4 divisors (see below), whose sum is σ = 68843667732144. Its totient is φ = 68843631106296.

The previous prime is 68843649419213. The next prime is 68843649419263. The reversal of 68843649419219 is 91291494634886.

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 68843649419219 - 2²⁴ = 68843632642003 is a prime.

It is a super-2 number, since 2×68843649419219² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68843649419213) 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, 1230692 + ... + 11798385.

It is an arithmetic number, because the mean of its divisors is an integer number (17210916933036).

Almost surely, 2^{68843649419219} is an apocalyptic number.

68843649419219 is a deficient number, since it is larger than the sum of its proper divisors (18312925).

68843649419219 is a wasteful number, since it uses less digits than its factorization.

68843649419219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18312924.

The product of its digits is 644972544, while the sum is 74.

The spelling of 68843649419219 in words is "sixty-eight trillion, eight hundred forty-three billion, six hundred forty-nine million, four hundred nineteen thousand, two hundred nineteen".