616611241613 has 2 divisors, whose sum is σ = 616611241614. Its totient is φ = 616611241612.

The previous prime is 616611241577. The next prime is 616611241643. The reversal of 616611241613 is 316142116616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 587349033769 + 29262207844 = 766387^2 + 171062^2 .

It is a cyclic number.

It is not a de Polignac number, because 616611241613 - 2³⁰ = 615537499789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616611241643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308305620806 + 308305620807.

It is an arithmetic number, because the mean of its divisors is an integer number (308305620807).

Almost surely, 2^616611241613 is an apocalyptic number.

It is an amenable number.

616611241613 is a deficient number, since it is larger than the sum of its proper divisors (1).

616611241613 is an equidigital number, since it uses as much as digits as its factorization.

616611241613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 38.

The spelling of 616611241613 in words is "six hundred sixteen billion, six hundred eleven million, two hundred forty-one thousand, six hundred thirteen".