67116665943 has 12 divisors (see below), whose sum is σ = 99008983008. Its totient is φ = 43792434240.

The previous prime is 67116665933. The next prime is 67116665947. The reversal of 67116665943 is 34956661176.

It is a happy number.

It is not a de Polignac number, because 67116665943 - 2¹² = 67116661847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67116665943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67116665947) 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 11 ways as a sum of consecutive naturals, for example, 79333698 + ... + 79334543.

It is an arithmetic number, because the mean of its divisors is an integer number (8250748584).

Almost surely, 2^67116665943 is an apocalyptic number.

67116665943 is a deficient number, since it is larger than the sum of its proper divisors (31892317065).

67116665943 is a wasteful number, since it uses less digits than its factorization.

67116665943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158668294 (or 158668291 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The spelling of 67116665943 in words is "sixty-seven billion, one hundred sixteen million, six hundred sixty-five thousand, nine hundred forty-three".