68340674161 has 4 divisors (see below), whose sum is σ = 68664563824. Its totient is φ = 68016784500.

The previous prime is 68340674147. The next prime is 68340674189. The reversal of 68340674161 is 16147604386.

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 68340674161 - 2⁹ = 68340673649 is a prime.

It is a super-3 number, since 3×68340674161³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68340672161) 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, 161944515 + ... + 161944936.

It is an arithmetic number, because the mean of its divisors is an integer number (17166140956).

Almost surely, 2^68340674161 is an apocalyptic number.

It is an amenable number.

68340674161 is a deficient number, since it is larger than the sum of its proper divisors (323889663).

68340674161 is a wasteful number, since it uses less digits than its factorization.

68340674161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323889662.

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 68340674161 in words is "sixty-eight billion, three hundred forty million, six hundred seventy-four thousand, one hundred sixty-one".