616004404013 has 2 divisors, whose sum is σ = 616004404014. Its totient is φ = 616004404012.

The previous prime is 616004404003. The next prime is 616004404027. The reversal of 616004404013 is 310404400616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 369076905289 + 246927498724 = 607517^2 + 496918^2 .

It is a cyclic number.

It is not a de Polignac number, because 616004404013 - 2⁸ = 616004403757 is a prime.

It is a super-2 number, since 2×616004404013² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616004404003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308002202006 + 308002202007.

It is an arithmetic number, because the mean of its divisors is an integer number (308002202007).

Almost surely, 2^616004404013 is an apocalyptic number.

It is an amenable number.

616004404013 is a deficient number, since it is larger than the sum of its proper divisors (1).

616004404013 is an equidigital number, since it uses as much as digits as its factorization.

616004404013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 616004404013 its reverse (310404400616), we get a palindrome (926408804629).

The spelling of 616004404013 in words is "six hundred sixteen billion, four million, four hundred four thousand, thirteen".