7491806982643 has 2 divisors, whose sum is σ = 7491806982644. Its totient is φ = 7491806982642.

The previous prime is 7491806982623. The next prime is 7491806982679. The reversal of 7491806982643 is 3462896081947.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7491806982643 - 2⁹ = 7491806982131 is a prime.

It is a super-2 number, since 2×7491806982643² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7491806982623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3745903491321 + 3745903491322.

It is an arithmetic number, because the mean of its divisors is an integer number (3745903491322).

Almost surely, 2^{7491806982643} is an apocalyptic number.

7491806982643 is a deficient number, since it is larger than the sum of its proper divisors (1).

7491806982643 is an equidigital number, since it uses as much as digits as its factorization.

7491806982643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 125411328, while the sum is 67.

The spelling of 7491806982643 in words is "seven trillion, four hundred ninety-one billion, eight hundred six million, nine hundred eighty-two thousand, six hundred forty-three".