512653768069 has 2 divisors, whose sum is σ = 512653768070. Its totient is φ = 512653768068.

The previous prime is 512653768009. The next prime is 512653768093. The reversal of 512653768069 is 960867356215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 396415048225 + 116238719844 = 629615^2 + 340938^2 .

It is a cyclic number.

It is not a de Polignac number, because 512653768069 - 2⁹ = 512653767557 is a prime.

It is a super-2 number, since 2×512653768069² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (512653768009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256326884034 + 256326884035.

It is an arithmetic number, because the mean of its divisors is an integer number (256326884035).

Almost surely, 2^512653768069 is an apocalyptic number.

It is an amenable number.

512653768069 is a deficient number, since it is larger than the sum of its proper divisors (1).

512653768069 is an equidigital number, since it uses as much as digits as its factorization.

512653768069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16329600, while the sum is 58.

The spelling of 512653768069 in words is "five hundred twelve billion, six hundred fifty-three million, seven hundred sixty-eight thousand, sixty-nine".