1643110326412 has 12 divisors (see below), whose sum is σ = 2875814581696. Its totient is φ = 821449017360.

The previous prime is 1643110326311. The next prime is 1643110326469. The reversal of 1643110326412 is 2146230113461.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26501628 + ... + 26563555.

Almost surely, 2^{1643110326412} is an apocalyptic number.

It is an amenable number.

1643110326412 is a deficient number, since it is larger than the sum of its proper divisors (1232704255284).

1643110326412 is a wasteful number, since it uses less digits than its factorization.

1643110326412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53072928 (or 53072926 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

Adding to 1643110326412 its reverse (2146230113461), we get a palindrome (3789340439873).

The spelling of 1643110326412 in words is "one trillion, six hundred forty-three billion, one hundred ten million, three hundred twenty-six thousand, four hundred twelve".