7808125127137 has 2 divisors, whose sum is σ = 7808125127138. Its totient is φ = 7808125127136.

The previous prime is 7808125127063. The next prime is 7808125127177. The reversal of 7808125127137 is 7317215218087.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5904141864336 + 1903983262801 = 2429844^2 + 1379849^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7808125127137 is a prime.

It is not a weakly prime, because it can be changed into another prime (7808125127177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3904062563568 + 3904062563569.

It is an arithmetic number, because the mean of its divisors is an integer number (3904062563569).

Almost surely, 2^{7808125127137} is an apocalyptic number.

It is an amenable number.

7808125127137 is a deficient number, since it is larger than the sum of its proper divisors (1).

7808125127137 is an equidigital number, since it uses as much as digits as its factorization.

7808125127137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1317120, while the sum is 52.

The spelling of 7808125127137 in words is "seven trillion, eight hundred eight billion, one hundred twenty-five million, one hundred twenty-seven thousand, one hundred thirty-seven".