515311143999997 has 2 divisors, whose sum is σ = 515311143999998. Its totient is φ = 515311143999996.

The previous prime is 515311143999907. The next prime is 515311144000013. The reversal of 515311143999997 is 799999341113515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 497853279015876 + 17457864984121 = 22312626^2 + 4178261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-515311143999997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (515311143999907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257655571999998 + 257655571999999.

It is an arithmetic number, because the mean of its divisors is an integer number (257655571999999).

Almost surely, 2^{515311143999997} is an apocalyptic number.

It is an amenable number.

515311143999997 is a deficient number, since it is larger than the sum of its proper divisors (1).

515311143999997 is an equidigital number, since it uses as much as digits as its factorization.

515311143999997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 372008700, while the sum is 76.

The spelling of 515311143999997 in words is "five hundred fifteen trillion, three hundred eleven billion, one hundred forty-three million, nine hundred ninety-nine thousand, nine hundred ninety-seven".