512684121629 has 2 divisors, whose sum is σ = 512684121630. Its totient is φ = 512684121628.

The previous prime is 512684121527. The next prime is 512684121643. The reversal of 512684121629 is 926121486215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 436934220100 + 75749901529 = 661010^2 + 275227^2 .

It is a cyclic number.

It is not a de Polignac number, because 512684121629 - 2⁸ = 512684121373 is a prime.

It is a super-2 number, since 2×512684121629² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (512684121659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256342060814 + 256342060815.

It is an arithmetic number, because the mean of its divisors is an integer number (256342060815).

Almost surely, 2^512684121629 is an apocalyptic number.

It is an amenable number.

512684121629 is a deficient number, since it is larger than the sum of its proper divisors (1).

512684121629 is an equidigital number, since it uses as much as digits as its factorization.

512684121629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 47.

The spelling of 512684121629 in words is "five hundred twelve billion, six hundred eighty-four million, one hundred twenty-one thousand, six hundred twenty-nine".