7138121543417 has 2 divisors, whose sum is σ = 7138121543418. Its totient is φ = 7138121543416.

The previous prime is 7138121543389. The next prime is 7138121543447. The reversal of 7138121543417 is 7143451218317.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3929953372921 + 3208168170496 = 1982411^2 + 1791136^2 .

It is a cyclic number.

It is not a de Polignac number, because 7138121543417 - 2¹⁰ = 7138121542393 is a prime.

It is not a weakly prime, because it can be changed into another prime (7138121543447) 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, 3569060771708 + 3569060771709.

It is an arithmetic number, because the mean of its divisors is an integer number (3569060771709).

Almost surely, 2^{7138121543417} is an apocalyptic number.

It is an amenable number.

7138121543417 is a deficient number, since it is larger than the sum of its proper divisors (1).

7138121543417 is an equidigital number, since it uses as much as digits as its factorization.

7138121543417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 564480, while the sum is 47.

The spelling of 7138121543417 in words is "seven trillion, one hundred thirty-eight billion, one hundred twenty-one million, five hundred forty-three thousand, four hundred seventeen".