515948252089 has 2 divisors, whose sum is σ = 515948252090. Its totient is φ = 515948252088.

The previous prime is 515948252047. The next prime is 515948252117. The reversal of 515948252089 is 980252849515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 456171914025 + 59776338064 = 675405^2 + 244492^2 .

It is a cyclic number.

It is not a de Polignac number, because 515948252089 - 2¹³ = 515948243897 is a prime.

It is not a weakly prime, because it can be changed into another prime (515948252389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257974126044 + 257974126045.

It is an arithmetic number, because the mean of its divisors is an integer number (257974126045).

Almost surely, 2^515948252089 is an apocalyptic number.

It is an amenable number.

515948252089 is a deficient number, since it is larger than the sum of its proper divisors (1).

515948252089 is an equidigital number, since it uses as much as digits as its factorization.

515948252089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368000, while the sum is 58.

The spelling of 515948252089 in words is "five hundred fifteen billion, nine hundred forty-eight million, two hundred fifty-two thousand, eighty-nine".