511045231421213 has 2 divisors, whose sum is σ = 511045231421214. Its totient is φ = 511045231421212.

The previous prime is 511045231421201. The next prime is 511045231421279. The reversal of 511045231421213 is 312124132540115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310803571862884 + 200241659558329 = 17629622^2 + 14150677^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-511045231421213 is a prime.

It is a super-2 number, since 2×511045231421213² (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 (511045231421713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255522615710606 + 255522615710607.

It is an arithmetic number, because the mean of its divisors is an integer number (255522615710607).

Almost surely, 2^{511045231421213} is an apocalyptic number.

It is an amenable number.

511045231421213 is a deficient number, since it is larger than the sum of its proper divisors (1).

511045231421213 is an equidigital number, since it uses as much as digits as its factorization.

511045231421213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 35.

Adding to 511045231421213 its reverse (312124132540115), we get a palindrome (823169363961328).

The spelling of 511045231421213 in words is "five hundred eleven trillion, forty-five billion, two hundred thirty-one million, four hundred twenty-one thousand, two hundred thirteen".