331693380810856 has 16 divisors (see below), whose sum is σ = 621925617465540. Its totient is φ = 165846549486720.

The previous prime is 331693380810793. The next prime is 331693380810893. The reversal of 331693380810856 is 658018083396133.

It can be written as a sum of positive squares in 2 ways, for example, as 331691878008100 + 1502802756 = 18212410^2 + 38766^2 .

It is a super-2 number, since 2×331693380810856² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7252651 + ... + 26757946.

Almost surely, 2^{331693380810856} is an apocalyptic number.

It is an amenable number.

331693380810856 is a deficient number, since it is larger than the sum of its proper divisors (290232236654684).

331693380810856 is a wasteful number, since it uses less digits than its factorization.

331693380810856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35229684 (or 35229680 counting only the distinct ones).

The product of its (nonzero) digits is 67184640, while the sum is 64.

The spelling of 331693380810856 in words is "three hundred thirty-one trillion, six hundred ninety-three billion, three hundred eighty million, eight hundred ten thousand, eight hundred fifty-six".