667044215205 has 16 divisors (see below), whose sum is σ = 1067283919680. Its totient is φ = 355752523008.

The previous prime is 667044215183. The next prime is 667044215207. The reversal of 667044215205 is 502512440766.

It is not a de Polignac number, because 667044215205 - 2³⁷ = 529605261733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667044215207) 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, 1256589 + ... + 1706781.

It is an arithmetic number, because the mean of its divisors is an integer number (66705244980).

Almost surely, 2^667044215205 is an apocalyptic number.

It is an amenable number.

667044215205 is a deficient number, since it is larger than the sum of its proper divisors (400239704475).

667044215205 is a wasteful number, since it uses less digits than its factorization.

667044215205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548980.

The product of its (nonzero) digits is 403200, while the sum is 42.

The spelling of 667044215205 in words is "six hundred sixty-seven billion, forty-four million, two hundred fifteen thousand, two hundred five".