515653366049 has 2 divisors, whose sum is σ = 515653366050. Its totient is φ = 515653366048.

The previous prime is 515653366001. The next prime is 515653366117. The reversal of 515653366049 is 940663356515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 513218930449 + 2434435600 = 716393^2 + 49340^2 .

It is a cyclic number.

It is not a de Polignac number, because 515653366049 - 2¹² = 515653361953 is a prime.

It is not a weakly prime, because it can be changed into another prime (515653365049) 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, 257826683024 + 257826683025.

It is an arithmetic number, because the mean of its divisors is an integer number (257826683025).

Almost surely, 2^515653366049 is an apocalyptic number.

It is an amenable number.

515653366049 is a deficient number, since it is larger than the sum of its proper divisors (1).

515653366049 is an equidigital number, since it uses as much as digits as its factorization.

515653366049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748000, while the sum is 53.

The spelling of 515653366049 in words is "five hundred fifteen billion, six hundred fifty-three million, three hundred sixty-six thousand, forty-nine".