511223650013 has 2 divisors, whose sum is σ = 511223650014. Its totient is φ = 511223650012.

The previous prime is 511223650001. The next prime is 511223650051. The reversal of 511223650013 is 310056322115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 510900441529 + 323208484 = 714773^2 + 17978^2 .

It is a cyclic number.

It is not a de Polignac number, because 511223650013 - 2¹² = 511223645917 is a prime.

It is a super-2 number, since 2×511223650013² (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 (511253650013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255611825006 + 255611825007.

It is an arithmetic number, because the mean of its divisors is an integer number (255611825007).

Almost surely, 2^511223650013 is an apocalyptic number.

It is an amenable number.

511223650013 is a deficient number, since it is larger than the sum of its proper divisors (1).

511223650013 is an equidigital number, since it uses as much as digits as its factorization.

511223650013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 511223650013 its reverse (310056322115), we get a palindrome (821279972128).

The spelling of 511223650013 in words is "five hundred eleven billion, two hundred twenty-three million, six hundred fifty thousand, thirteen".