67664282421 has 16 divisors (see below), whose sum is σ = 91629619200. Its totient is φ = 44405175408.

The previous prime is 67664282377. The next prime is 67664282431. The reversal of 67664282421 is 12428246676.

It is not a de Polignac number, because 67664282421 - 2¹¹ = 67664280373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67664282431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172270 + ... + 406208.

It is an arithmetic number, because the mean of its divisors is an integer number (5726851200).

Almost surely, 2^67664282421 is an apocalyptic number.

It is an amenable number.

67664282421 is a deficient number, since it is larger than the sum of its proper divisors (23965336779).

67664282421 is a wasteful number, since it uses less digits than its factorization.

67664282421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235448.

The product of its digits is 1548288, while the sum is 48.

The spelling of 67664282421 in words is "sixty-seven billion, six hundred sixty-four million, two hundred eighty-two thousand, four hundred twenty-one".