514514646415421 has 2 divisors, whose sum is σ = 514514646415422. Its totient is φ = 514514646415420.

The previous prime is 514514646415381. The next prime is 514514646415423. The reversal of 514514646415421 is 124514646415415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 463369106520100 + 51145539895321 = 21526010^2 + 7151611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-514514646415421 is a prime.

It is a Sophie Germain prime.

Together with 514514646415423, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (514514646415423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257257323207710 + 257257323207711.

It is an arithmetic number, because the mean of its divisors is an integer number (257257323207711).

Almost surely, 2^{514514646415421} is an apocalyptic number.

It is an amenable number.

514514646415421 is a deficient number, since it is larger than the sum of its proper divisors (1).

514514646415421 is an equidigital number, since it uses as much as digits as its factorization.

514514646415421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216000, while the sum is 53.

The spelling of 514514646415421 in words is "five hundred fourteen trillion, five hundred fourteen billion, six hundred forty-six million, four hundred fifteen thousand, four hundred twenty-one".