616334433691 has 2 divisors, whose sum is σ = 616334433692. Its totient is φ = 616334433690.

The previous prime is 616334433569. The next prime is 616334433707. The reversal of 616334433691 is 196334433616.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616334433691 is a prime.

It is not a weakly prime, because it can be changed into another prime (616334433791) 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, 308167216845 + 308167216846.

It is an arithmetic number, because the mean of its divisors is an integer number (308167216846).

Almost surely, 2^616334433691 is an apocalyptic number.

616334433691 is a deficient number, since it is larger than the sum of its proper divisors (1).

616334433691 is an equidigital number, since it uses as much as digits as its factorization.

616334433691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2519424, while the sum is 49.

The spelling of 616334433691 in words is "six hundred sixteen billion, three hundred thirty-four million, four hundred thirty-three thousand, six hundred ninety-one".