316661661668 has 48 divisors (see below), whose sum is σ = 607599474048. Its totient is φ = 143209248000.

The previous prime is 316661661623. The next prime is 316661661691. The reversal of 316661661668 is 866166166613.

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, 8351513 + ... + 8389343.

It is an arithmetic number, because the mean of its divisors is an integer number (12658322376).

Almost surely, 2^316661661668 is an apocalyptic number.

It is an amenable number.

316661661668 is a deficient number, since it is larger than the sum of its proper divisors (290937812380).

316661661668 is a wasteful number, since it uses less digits than its factorization.

316661661668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38804 (or 38802 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 56.

The spelling of 316661661668 in words is "three hundred sixteen billion, six hundred sixty-one million, six hundred sixty-one thousand, six hundred sixty-eight".