512516958750749 has 2 divisors, whose sum is σ = 512516958750750. Its totient is φ = 512516958750748.

The previous prime is 512516958750701. The next prime is 512516958750761. The reversal of 512516958750749 is 947057859615215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 315260692158724 + 197256266592025 = 17755582^2 + 14044795^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-512516958750749 is a prime.

It is a super-2 number, since 2×512516958750749² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (512516958753749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256258479375374 + 256258479375375.

It is an arithmetic number, because the mean of its divisors is an integer number (256258479375375).

Almost surely, 2^{512516958750749} is an apocalyptic number.

It is an amenable number.

512516958750749 is a deficient number, since it is larger than the sum of its proper divisors (1).

512516958750749 is an equidigital number, since it uses as much as digits as its factorization.

512516958750749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 952560000, while the sum is 74.

The spelling of 512516958750749 in words is "five hundred twelve trillion, five hundred sixteen billion, nine hundred fifty-eight million, seven hundred fifty thousand, seven hundred forty-nine".