616321303422613 has 2 divisors, whose sum is σ = 616321303422614. Its totient is φ = 616321303422612.

The previous prime is 616321303422611. The next prime is 616321303422683. The reversal of 616321303422613 is 316224303123616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 369117159106084 + 247204144316529 = 19212422^2 + 15722727^2 .

It is a cyclic number.

It is not a de Polignac number, because 616321303422613 - 2¹ = 616321303422611 is a prime.

Together with 616321303422611, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 616321303422613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616321303422611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308160651711306 + 308160651711307.

It is an arithmetic number, because the mean of its divisors is an integer number (308160651711307).

Almost surely, 2^{616321303422613} is an apocalyptic number.

It is an amenable number.

616321303422613 is a deficient number, since it is larger than the sum of its proper divisors (1).

616321303422613 is an equidigital number, since it uses as much as digits as its factorization.

616321303422613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 43.

The spelling of 616321303422613 in words is "six hundred sixteen trillion, three hundred twenty-one billion, three hundred three million, four hundred twenty-two thousand, six hundred thirteen".