7173129157 has 2 divisors, whose sum is σ = 7173129158. Its totient is φ = 7173129156.

The previous prime is 7173129079. The next prime is 7173129241. The reversal of 7173129157 is 7519213717.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5487698241 + 1685430916 = 74079^2 + 41054^2 .

It is a cyclic number.

It is not a de Polignac number, because 7173129157 - 2¹⁹ = 7172604869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7173129757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3586564578 + 3586564579.

It is an arithmetic number, because the mean of its divisors is an integer number (3586564579).

Almost surely, 2^7173129157 is an apocalyptic number.

It is an amenable number.

7173129157 is a deficient number, since it is larger than the sum of its proper divisors (1).

7173129157 is an equidigital number, since it uses as much as digits as its factorization.

7173129157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92610, while the sum is 43.

The square root of 7173129157 is about 84694.3277734702. The cubic root of 7173129157 is about 1928.5735974503.

The spelling of 7173129157 in words is "seven billion, one hundred seventy-three million, one hundred twenty-nine thousand, one hundred fifty-seven".