7138142546879 has 2 divisors, whose sum is σ = 7138142546880. Its totient is φ = 7138142546878.

The previous prime is 7138142546813. The next prime is 7138142546881. The reversal of 7138142546879 is 9786452418317.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7138142546879 is a prime.

Together with 7138142546881, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7138142506879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3569071273439 + 3569071273440.

It is an arithmetic number, because the mean of its divisors is an integer number (3569071273440).

Almost surely, 2^{7138142546879} is an apocalyptic number.

7138142546879 is a deficient number, since it is larger than the sum of its proper divisors (1).

7138142546879 is an equidigital number, since it uses as much as digits as its factorization.

7138142546879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81285120, while the sum is 65.

The spelling of 7138142546879 in words is "seven trillion, one hundred thirty-eight billion, one hundred forty-two million, five hundred forty-six thousand, eight hundred seventy-nine".