511423605260213 has 2 divisors, whose sum is σ = 511423605260214. Its totient is φ = 511423605260212.

The previous prime is 511423605260209. The next prime is 511423605260231. The reversal of 511423605260213 is 312062506324115.

Together with next prime (511423605260231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 509003097843409 + 2420507416804 = 22561097^2 + 1555798^2 .

It is a cyclic number.

It is not a de Polignac number, because 511423605260213 - 2² = 511423605260209 is a prime.

It is a super-2 number, since 2×511423605260213² (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 (511423605200213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255711802630106 + 255711802630107.

It is an arithmetic number, because the mean of its divisors is an integer number (255711802630107).

Almost surely, 2^{511423605260213} is an apocalyptic number.

It is an amenable number.

511423605260213 is a deficient number, since it is larger than the sum of its proper divisors (1).

511423605260213 is an equidigital number, since it uses as much as digits as its factorization.

511423605260213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 511423605260213 in words is "five hundred eleven trillion, four hundred twenty-three billion, six hundred five million, two hundred sixty thousand, two hundred thirteen".