67228122671 has 4 divisors (see below), whose sum is σ = 67656327432. Its totient is φ = 66799917912.

The previous prime is 67228122629. The next prime is 67228122673. The reversal of 67228122671 is 17622182276.

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 67228122671 - 2¹⁴ = 67228106287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67228122673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214102145 + ... + 214102458.

It is an arithmetic number, because the mean of its divisors is an integer number (16914081858).

Almost surely, 2^67228122671 is an apocalyptic number.

67228122671 is a deficient number, since it is larger than the sum of its proper divisors (428204761).

67228122671 is a wasteful number, since it uses less digits than its factorization.

67228122671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428204760.

The product of its digits is 225792, while the sum is 44.

The spelling of 67228122671 in words is "sixty-seven billion, two hundred twenty-eight million, one hundred twenty-two thousand, six hundred seventy-one".