616573866563 has 2 divisors, whose sum is σ = 616573866564. Its totient is φ = 616573866562.

The previous prime is 616573866443. The next prime is 616573866599. The reversal of 616573866563 is 365668375616.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 616573866563 - 2²⁴ = 616557089347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 616573866496 and 616573866505.

It is not a weakly prime, because it can be changed into another prime (616573866163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308286933281 + 308286933282.

It is an arithmetic number, because the mean of its divisors is an integer number (308286933282).

Almost surely, 2^616573866563 is an apocalyptic number.

616573866563 is a deficient number, since it is larger than the sum of its proper divisors (1).

616573866563 is an equidigital number, since it uses as much as digits as its factorization.

616573866563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97977600, while the sum is 62.

The spelling of 616573866563 in words is "six hundred sixteen billion, five hundred seventy-three million, eight hundred sixty-six thousand, five hundred sixty-three".