7138123640443 has 2 divisors, whose sum is σ = 7138123640444. Its totient is φ = 7138123640442.

The previous prime is 7138123640441. The next prime is 7138123640447. The reversal of 7138123640443 is 3440463218317.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7138123640443 - 2¹ = 7138123640441 is a prime.

Together with 7138123640441, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 7138123640393 and 7138123640402.

It is not a weakly prime, because it can be changed into another prime (7138123640441) 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, 3569061820221 + 3569061820222.

It is an arithmetic number, because the mean of its divisors is an integer number (3569061820222).

Almost surely, 2^{7138123640443} is an apocalyptic number.

7138123640443 is a deficient number, since it is larger than the sum of its proper divisors (1).

7138123640443 is an equidigital number, since it uses as much as digits as its factorization.

7138123640443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 46.

The spelling of 7138123640443 in words is "seven trillion, one hundred thirty-eight billion, one hundred twenty-three million, six hundred forty thousand, four hundred forty-three".