73115285137 has 2 divisors, whose sum is σ = 73115285138. Its totient is φ = 73115285136.

The previous prime is 73115285123. The next prime is 73115285203. The reversal of 73115285137 is 73158251137.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59515993681 + 13599291456 = 243959^2 + 116616^2 .

It is an emirp because it is prime and its reverse (73158251137) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73115285137 - 2¹⁵ = 73115252369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 73115285093 and 73115285102.

It is not a weakly prime, because it can be changed into another prime (73115282137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36557642568 + 36557642569.

It is an arithmetic number, because the mean of its divisors is an integer number (36557642569).

Almost surely, 2^73115285137 is an apocalyptic number.

It is an amenable number.

73115285137 is a deficient number, since it is larger than the sum of its proper divisors (1).

73115285137 is an equidigital number, since it uses as much as digits as its factorization.

73115285137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 176400, while the sum is 43.

The spelling of 73115285137 in words is "seventy-three billion, one hundred fifteen million, two hundred eighty-five thousand, one hundred thirty-seven".