67945800667 has 16 divisors (see below), whose sum is σ = 71396795520. Its totient is φ = 64590244992.

The previous prime is 67945800661. The next prime is 67945800677. The reversal of 67945800667 is 76600854976.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 67945800667 - 2¹¹ = 67945798619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67945800661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 396193 + ... + 541165.

It is an arithmetic number, because the mean of its divisors is an integer number (4462299720).

Almost surely, 2^67945800667 is an apocalyptic number.

67945800667 is a deficient number, since it is larger than the sum of its proper divisors (3450994853).

67945800667 is a wasteful number, since it uses less digits than its factorization.

67945800667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145302.

The product of its (nonzero) digits is 15240960, while the sum is 58.

The spelling of 67945800667 in words is "sixty-seven billion, nine hundred forty-five million, eight hundred thousand, six hundred sixty-seven".