67131221670668 has 24 divisors (see below), whose sum is σ = 119481704596800. Its totient is φ = 32993695465808.

The previous prime is 67131221670659. The next prime is 67131221670677. The reversal of 67131221670668 is 86607612213176.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (67131221670659) and next prime (67131221670677).

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, 10363430 + ... + 15545517.

It is an arithmetic number, because the mean of its divisors is an integer number (4978404358200).

Almost surely, 2^{67131221670668} is an apocalyptic number.

It is an amenable number.

67131221670668 is a deficient number, since it is larger than the sum of its proper divisors (52350482926132).

67131221670668 is a wasteful number, since it uses less digits than its factorization.

67131221670668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25919989 (or 25919987 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 56.

The spelling of 67131221670668 in words is "sixty-seven trillion, one hundred thirty-one billion, two hundred twenty-one million, six hundred seventy thousand, six hundred sixty-eight".