67221434273 has 4 divisors (see below), whose sum is σ = 76824496320. Its totient is φ = 57618372228.

The previous prime is 67221434213. The next prime is 67221434303. The reversal of 67221434273 is 37243412276.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67221434273 - 2³⁰ = 66147692449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67221434273.

It is not an unprimeable number, because it can be changed into a prime (67221434213) 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, 4801531013 + ... + 4801531026.

It is an arithmetic number, because the mean of its divisors is an integer number (19206124080).

Almost surely, 2^67221434273 is an apocalyptic number.

It is an amenable number.

67221434273 is a deficient number, since it is larger than the sum of its proper divisors (9603062047).

67221434273 is an equidigital number, since it uses as much as digits as its factorization.

67221434273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9603062046.

The product of its digits is 338688, while the sum is 41.

The spelling of 67221434273 in words is "sixty-seven billion, two hundred twenty-one million, four hundred thirty-four thousand, two hundred seventy-three".