500121633536513 has 2 divisors, whose sum is σ = 500121633536514. Its totient is φ = 500121633536512.

The previous prime is 500121633536491. The next prime is 500121633536533. The reversal of 500121633536513 is 315635336121005.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 295166419046464 + 204955214490049 = 17180408^2 + 14316257^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-500121633536513 is a prime.

It is not a weakly prime, because it can be changed into another prime (500121633536533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250060816768256 + 250060816768257.

It is an arithmetic number, because the mean of its divisors is an integer number (250060816768257).

Almost surely, 2^{500121633536513} is an apocalyptic number.

It is an amenable number.

500121633536513 is a deficient number, since it is larger than the sum of its proper divisors (1).

500121633536513 is an equidigital number, since it uses as much as digits as its factorization.

500121633536513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 729000, while the sum is 44.

Adding to 500121633536513 its reverse (315635336121005), we get a palindrome (815756969657518).

The spelling of 500121633536513 in words is "five hundred trillion, one hundred twenty-one billion, six hundred thirty-three million, five hundred thirty-six thousand, five hundred thirteen".