67738945217 has 8 divisors (see below), whose sum is σ = 71958321600. Its totient is φ = 63584985744.

The previous prime is 67738945189. The next prime is 67738945223. The reversal of 67738945217 is 71254983776.

It is a happy number.

67738945217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 67738945217 - 2¹⁰ = 67738944193 is a prime.

It is a super-3 number, since 3×67738945217³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67738945247) 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, 16352093 + ... + 16356234.

It is an arithmetic number, because the mean of its divisors is an integer number (8994790200).

Almost surely, 2^67738945217 is an apocalyptic number.

It is an amenable number.

67738945217 is a deficient number, since it is larger than the sum of its proper divisors (4219376383).

67738945217 is a wasteful number, since it uses less digits than its factorization.

67738945217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32708455.

The product of its digits is 17781120, while the sum is 59.

The spelling of 67738945217 in words is "sixty-seven billion, seven hundred thirty-eight million, nine hundred forty-five thousand, two hundred seventeen".