616557089347 has 2 divisors, whose sum is σ = 616557089348. Its totient is φ = 616557089346.

The previous prime is 616557089297. The next prime is 616557089353. The reversal of 616557089347 is 743980755616.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 616557089347 - 2²³ = 616548700739 is a prime.

It is not a weakly prime, because it can be changed into another prime (616557089387) 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, 308278544673 + 308278544674.

It is an arithmetic number, because the mean of its divisors is an integer number (308278544674).

Almost surely, 2^616557089347 is an apocalyptic number.

616557089347 is a deficient number, since it is larger than the sum of its proper divisors (1).

616557089347 is an equidigital number, since it uses as much as digits as its factorization.

616557089347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38102400, while the sum is 61.

The spelling of 616557089347 in words is "six hundred sixteen billion, five hundred fifty-seven million, eighty-nine thousand, three hundred forty-seven".