67211966816 has 24 divisors (see below), whose sum is σ = 132754600440. Its totient is φ = 33496512768.

The previous prime is 67211966777. The next prime is 67211966831. The reversal of 67211966816 is 61866911276.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3410981 + ... + 3430628.

It is an arithmetic number, because the mean of its divisors is an integer number (5531441685).

Almost surely, 2^67211966816 is an apocalyptic number.

It is an amenable number.

67211966816 is a deficient number, since it is larger than the sum of its proper divisors (65542633624).

67211966816 is a wasteful number, since it uses less digits than its factorization.

67211966816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6841926 (or 6841918 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 53.

The spelling of 67211966816 in words is "sixty-seven billion, two hundred eleven million, nine hundred sixty-six thousand, eight hundred sixteen".