67217121164 has 24 divisors (see below), whose sum is σ = 119375722368. Its totient is φ = 33112880640.

The previous prime is 67217121163. The next prime is 67217121247. The reversal of 67217121164 is 46112171276.

It is not an unprimeable number, because it can be changed into a prime (67217121163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301907 + ... + 474954.

It is an arithmetic number, because the mean of its divisors is an integer number (4973988432).

Almost surely, 2^67217121164 is an apocalyptic number.

It is an amenable number.

67217121164 is a deficient number, since it is larger than the sum of its proper divisors (52158601204).

67217121164 is a wasteful number, since it uses less digits than its factorization.

67217121164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777185 (or 777183 counting only the distinct ones).

The product of its digits is 28224, while the sum is 38.

The spelling of 67217121164 in words is "sixty-seven billion, two hundred seventeen million, one hundred twenty-one thousand, one hundred sixty-four".