7981311590143 has 2 divisors, whose sum is σ = 7981311590144. Its totient is φ = 7981311590142.

The previous prime is 7981311590141. The next prime is 7981311590191. The reversal of 7981311590143 is 3410951131897.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7981311590143 - 2¹ = 7981311590141 is a prime.

Together with 7981311590141, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7981311590141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3990655795071 + 3990655795072.

It is an arithmetic number, because the mean of its divisors is an integer number (3990655795072).

Almost surely, 2^{7981311590143} is an apocalyptic number.

7981311590143 is a deficient number, since it is larger than the sum of its proper divisors (1).

7981311590143 is an equidigital number, since it uses as much as digits as its factorization.

7981311590143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 52.

The spelling of 7981311590143 in words is "seven trillion, nine hundred eighty-one billion, three hundred eleven million, five hundred ninety thousand, one hundred forty-three".