67121566327 has 8 divisors (see below), whose sum is σ = 73362471552. Its totient is φ = 61135392000.

The previous prime is 67121566321. The next prime is 67121566331. The reversal of 67121566327 is 72366512176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67121566327 - 2²⁷ = 66987348599 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 (67121566321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63682174 + ... + 63683227.

It is an arithmetic number, because the mean of its divisors is an integer number (9170308944).

Almost surely, 2^67121566327 is an apocalyptic number.

67121566327 is a deficient number, since it is larger than the sum of its proper divisors (6240905225).

67121566327 is a wasteful number, since it uses less digits than its factorization.

67121566327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127365449.

The product of its digits is 635040, while the sum is 46.

The spelling of 67121566327 in words is "sixty-seven billion, one hundred twenty-one million, five hundred sixty-six thousand, three hundred twenty-seven".