67646354161 has 8 divisors (see below), whose sum is σ = 69261072320. Its totient is φ = 66033524592.

The previous prime is 67646354123. The next prime is 67646354177. The reversal of 67646354161 is 16145364676.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67646354161 - 2⁷ = 67646354033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67646354861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399525 + ... + 543058.

It is an arithmetic number, because the mean of its divisors is an integer number (8657634040).

Almost surely, 2^67646354161 is an apocalyptic number.

It is an amenable number.

67646354161 is a deficient number, since it is larger than the sum of its proper divisors (1614718159).

67646354161 is a wasteful number, since it uses less digits than its factorization.

67646354161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944295.

The product of its digits is 2177280, while the sum is 49.

The spelling of 67646354161 in words is "sixty-seven billion, six hundred forty-six million, three hundred fifty-four thousand, one hundred sixty-one".