67340172217 has 8 divisors (see below), whose sum is σ = 71351490816. Its totient is φ = 63334423872.

The previous prime is 67340172181. The next prime is 67340172227. The reversal of 67340172217 is 71227104376.

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 67340172217 - 2¹¹ = 67340170169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67340172217.

It is not an unprimeable number, because it can be changed into a prime (67340172227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1367653 + ... + 1416034.

It is an arithmetic number, because the mean of its divisors is an integer number (8918936352).

Almost surely, 2^67340172217 is an apocalyptic number.

It is an amenable number.

67340172217 is a deficient number, since it is larger than the sum of its proper divisors (4011318599).

67340172217 is a wasteful number, since it uses less digits than its factorization.

67340172217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2785127.

The product of its (nonzero) digits is 98784, while the sum is 40.

The spelling of 67340172217 in words is "sixty-seven billion, three hundred forty million, one hundred seventy-two thousand, two hundred seventeen".