516021213053 has 2 divisors, whose sum is σ = 516021213054. Its totient is φ = 516021213052.

The previous prime is 516021213049. The next prime is 516021213107. The reversal of 516021213053 is 350312120615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 415010389369 + 101010823684 = 644213^2 + 317822^2 .

It is a cyclic number.

It is not a de Polignac number, because 516021213053 - 2² = 516021213049 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (516021213553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258010606526 + 258010606527.

It is an arithmetic number, because the mean of its divisors is an integer number (258010606527).

Almost surely, 2^516021213053 is an apocalyptic number.

It is an amenable number.

516021213053 is a deficient number, since it is larger than the sum of its proper divisors (1).

516021213053 is an equidigital number, since it uses as much as digits as its factorization.

516021213053 is an odious number, because the sum of its binary digits is odd.

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

Adding to 516021213053 its reverse (350312120615), we get a palindrome (866333333668).

The spelling of 516021213053 in words is "five hundred sixteen billion, twenty-one million, two hundred thirteen thousand, fifty-three".