67644016466627 has 4 divisors (see below), whose sum is σ = 67645977936336. Its totient is φ = 67642054996920.

The previous prime is 67644016466617. The next prime is 67644016466633. The reversal of 67644016466627 is 72666461044676.

It is a happy number.

67644016466627 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 67644016466627 - 2³⁴ = 67626836597443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67644016466617) 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 3 ways as a sum of consecutive naturals, for example, 980683124 + ... + 980752097.

It is an arithmetic number, because the mean of its divisors is an integer number (16911494484084).

Almost surely, 2^{67644016466627} is an apocalyptic number.

67644016466627 is a deficient number, since it is larger than the sum of its proper divisors (1961469709).

67644016466627 is a wasteful number, since it uses less digits than its factorization.

67644016466627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961469708.

The product of its (nonzero) digits is 292626432, while the sum is 65.

The spelling of 67644016466627 in words is "sixty-seven trillion, six hundred forty-four billion, sixteen million, four hundred sixty-six thousand, six hundred twenty-seven".