67000667771 has 4 divisors (see below), whose sum is σ = 67100223672. Its totient is φ = 66901111872.

The previous prime is 67000667743. The next prime is 67000667807. The reversal of 67000667771 is 17776600076.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67000667771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67000667711) 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, 49776941 + ... + 49778286.

It is an arithmetic number, because the mean of its divisors is an integer number (16775055918).

Almost surely, 2^67000667771 is an apocalyptic number.

67000667771 is a deficient number, since it is larger than the sum of its proper divisors (99555901).

67000667771 is an equidigital number, since it uses as much as digits as its factorization.

67000667771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99555900.

The product of its (nonzero) digits is 518616, while the sum is 47.

The spelling of 67000667771 in words is "sixty-seven billion, six hundred sixty-seven thousand, seven hundred seventy-one".