7138121733737 has 2 divisors, whose sum is σ = 7138121733738. Its totient is φ = 7138121733736.

The previous prime is 7138121733671. The next prime is 7138121733749. The reversal of 7138121733737 is 7373371218317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6495076519936 + 643045213801 = 2548544^2 + 801901^2 .

It is a cyclic number.

It is not a de Polignac number, because 7138121733737 - 2²⁰ = 7138120685161 is a prime.

It is not a weakly prime, because it can be changed into another prime (7138129733737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3569060866868 + 3569060866869.

It is an arithmetic number, because the mean of its divisors is an integer number (3569060866869).

Almost surely, 2^{7138121733737} is an apocalyptic number.

It is an amenable number.

7138121733737 is a deficient number, since it is larger than the sum of its proper divisors (1).

7138121733737 is an equidigital number, since it uses as much as digits as its factorization.

7138121733737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3111696, while the sum is 53.

The spelling of 7138121733737 in words is "seven trillion, one hundred thirty-eight billion, one hundred twenty-one million, seven hundred thirty-three thousand, seven hundred thirty-seven".