667615375215556 has 48 divisors (see below), whose sum is σ = 1199535009970752. Its totient is φ = 325003810032000.

The previous prime is 667615375215521. The next prime is 667615375215589. The reversal of 667615375215556 is 655512573516766.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 95877795 + ... + 102604981.

It is an arithmetic number, because the mean of its divisors is an integer number (24990312707724).

Almost surely, 2^{667615375215556} is an apocalyptic number.

It is an amenable number.

667615375215556 is a deficient number, since it is larger than the sum of its proper divisors (531919634755196).

667615375215556 is a wasteful number, since it uses less digits than its factorization.

667615375215556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6731380 (or 6731378 counting only the distinct ones).

The product of its digits is 1190700000, while the sum is 70.

The spelling of 667615375215556 in words is "six hundred sixty-seven trillion, six hundred fifteen billion, three hundred seventy-five million, two hundred fifteen thousand, five hundred fifty-six".