67934644221 has 16 divisors (see below), whose sum is σ = 92743985664. Its totient is φ = 44208850224.

The previous prime is 67934644213. The next prime is 67934644241. The reversal of 67934644221 is 12244643976.

It is not a de Polignac number, because 67934644221 - 2³ = 67934644213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67934644241) 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 15 ways as a sum of consecutive naturals, for example, 43450 + ... + 371156.

It is an arithmetic number, because the mean of its divisors is an integer number (5796499104).

Almost surely, 2^67934644221 is an apocalyptic number.

It is an amenable number.

67934644221 is a deficient number, since it is larger than the sum of its proper divisors (24809341443).

67934644221 is a wasteful number, since it uses less digits than its factorization.

67934644221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329360.

The product of its digits is 1741824, while the sum is 48.

The spelling of 67934644221 in words is "sixty-seven billion, nine hundred thirty-four million, six hundred forty-four thousand, two hundred twenty-one".