67061344321 has 8 divisors (see below), whose sum is σ = 70987150080. Its totient is φ = 63243094992.

The previous prime is 67061344309. The next prime is 67061344333. The reversal of 67061344321 is 12344316076.

67061344321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (67061344309) and next prime (67061344333).

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 67061344321 - 2¹¹ = 67061342273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67061344381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26887825 + ... + 26890318.

It is an arithmetic number, because the mean of its divisors is an integer number (8873393760).

Almost surely, 2^67061344321 is an apocalyptic number.

It is an amenable number.

67061344321 is a deficient number, since it is larger than the sum of its proper divisors (3925805759).

67061344321 is a wasteful number, since it uses less digits than its factorization.

67061344321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53778215.

The product of its (nonzero) digits is 72576, while the sum is 37.

The spelling of 67061344321 in words is "sixty-seven billion, sixty-one million, three hundred forty-four thousand, three hundred twenty-one".