67161217205 has 8 divisors (see below), whose sum is σ = 80595743904. Its totient is φ = 53727451600.

The previous prime is 67161217199. The next prime is 67161217217. The reversal of 67161217205 is 50271216176.

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

It is not a de Polignac number, because 67161217205 - 2¹⁶ = 67161151669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26270 + ... + 367440.

It is an arithmetic number, because the mean of its divisors is an integer number (10074467988).

Almost surely, 2^67161217205 is an apocalyptic number.

It is an amenable number.

67161217205 is a deficient number, since it is larger than the sum of its proper divisors (13434526699).

67161217205 is a wasteful number, since it uses less digits than its factorization.

67161217205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380547.

The product of its (nonzero) digits is 35280, while the sum is 38.

The spelling of 67161217205 in words is "sixty-seven billion, one hundred sixty-one million, two hundred seventeen thousand, two hundred five".