673612213867 has 4 divisors (see below), whose sum is σ = 674432692416. Its totient is φ = 672791735320.

The previous prime is 673612213849. The next prime is 673612213871. The reversal of 673612213867 is 768312216376.

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 673612213867 - 2¹¹ = 673612211819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673622213867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410238043 + ... + 410239684.

It is an arithmetic number, because the mean of its divisors is an integer number (168608173104).

Almost surely, 2^673612213867 is an apocalyptic number.

673612213867 is a deficient number, since it is larger than the sum of its proper divisors (820478549).

673612213867 is an equidigital number, since it uses as much as digits as its factorization.

673612213867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820478548.

The product of its digits is 3048192, while the sum is 52.

The spelling of 673612213867 in words is "six hundred seventy-three billion, six hundred twelve million, two hundred thirteen thousand, eight hundred sixty-seven".