7668372738643 has 2 divisors, whose sum is σ = 7668372738644. Its totient is φ = 7668372738642.

The previous prime is 7668372738623. The next prime is 7668372738701. The reversal of 7668372738643 is 3468372738667.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7668372738643 is a prime.

It is not a weakly prime, because it can be changed into another prime (7668372738623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3834186369321 + 3834186369322.

It is an arithmetic number, because the mean of its divisors is an integer number (3834186369322).

Almost surely, 2^{7668372738643} is an apocalyptic number.

7668372738643 is a deficient number, since it is larger than the sum of its proper divisors (1).

7668372738643 is an equidigital number, since it uses as much as digits as its factorization.

7668372738643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1024192512, while the sum is 70.

The spelling of 7668372738643 in words is "seven trillion, six hundred sixty-eight billion, three hundred seventy-two million, seven hundred thirty-eight thousand, six hundred forty-three".