67987066412329 has 9 divisors (see below), whose sum is σ = 69159415341783. Its totient is φ = 66834265018032.

The previous prime is 67987066412327. The next prime is 67987066412341. The reversal of 67987066412329 is 92321466078976.

The square root of 67987066412329 is 8245427.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 65349196693225 + 2637869719104 = 8083885^2 + 1624152^2 .

It is not a de Polignac number, because 67987066412329 - 2¹ = 67987066412327 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67987066412327) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 486410317 + ... + 486550069.

Almost surely, 2^{67987066412329} is an apocalyptic number.

67987066412329 is the 8245427-th square number.

67987066412329 is the 4122714-th centered octagonal number.

It is an amenable number.

67987066412329 is a deficient number, since it is larger than the sum of its proper divisors (1172348929454).

67987066412329 is an frugal number, since it uses more digits than its factorization.

67987066412329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279624 (or 139812 counting only the distinct ones).

The product of its (nonzero) digits is 329204736, while the sum is 70.

The spelling of 67987066412329 in words is "sixty-seven trillion, nine hundred eighty-seven billion, sixty-six million, four hundred twelve thousand, three hundred twenty-nine".