667616312317445 has 16 divisors (see below), whose sum is σ = 835974525519360. Its totient is φ = 510869904657024.

The previous prime is 667616312317439. The next prime is 667616312317571. The reversal of 667616312317445 is 544713213616766.

It is not a de Polignac number, because 667616312317445 - 2¹⁶ = 667616312251909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25384916 + ... + 44492994.

It is an arithmetic number, because the mean of its divisors is an integer number (52248407844960).

Almost surely, 2^{667616312317445} is an apocalyptic number.

It is an amenable number.

667616312317445 is a deficient number, since it is larger than the sum of its proper divisors (168358213201915).

667616312317445 is a wasteful number, since it uses less digits than its factorization.

667616312317445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19411924.

The product of its digits is 91445760, while the sum is 62.

The spelling of 667616312317445 in words is "six hundred sixty-seven trillion, six hundred sixteen billion, three hundred twelve million, three hundred seventeen thousand, four hundred forty-five".