67311212243 has 4 divisors (see below), whose sum is σ = 73430413368. Its totient is φ = 61192011120.

The previous prime is 67311212191. The next prime is 67311212249. The reversal of 67311212243 is 34221211376.

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 67311212243 - 2⁶ = 67311212179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67311212249) 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, 3059600546 + ... + 3059600567.

It is an arithmetic number, because the mean of its divisors is an integer number (18357603342).

Almost surely, 2^67311212243 is an apocalyptic number.

67311212243 is a deficient number, since it is larger than the sum of its proper divisors (6119201125).

67311212243 is a wasteful number, since it uses less digits than its factorization.

67311212243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6119201124.

The product of its digits is 12096, while the sum is 32.

The spelling of 67311212243 in words is "sixty-seven billion, three hundred eleven million, two hundred twelve thousand, two hundred forty-three".