1068315605668 has 6 divisors (see below), whose sum is σ = 1869552309926. Its totient is φ = 534157802832.

The previous prime is 1068315605657. The next prime is 1068315605741. The reversal of 1068315605668 is 8665065138601.

It can be written as a sum of positive squares in only one way, i.e., 1006815573604 + 61500032064 = 1003402^2 + 247992^2 .

It is a super-2 number, since 2×1068315605668² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133539450705 + ... + 133539450712.

Almost surely, 2^{1068315605668} is an apocalyptic number.

It is an amenable number.

1068315605668 is a deficient number, since it is larger than the sum of its proper divisors (801236704258).

1068315605668 is a wasteful number, since it uses less digits than its factorization.

1068315605668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267078901421 (or 267078901419 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 55.

The spelling of 1068315605668 in words is "one trillion, sixty-eight billion, three hundred fifteen million, six hundred five thousand, six hundred sixty-eight".