616868420044 has 12 divisors (see below), whose sum is σ = 1081416961800. Its totient is φ = 307892145248.

The previous prime is 616868420023. The next prime is 616868420081. The reversal of 616868420044 is 440024868616.

It is a self number, because there is not a number n which added to its sum of digits gives 616868420044.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135513634 + ... + 135518185.

It is an arithmetic number, because the mean of its divisors is an integer number (90118080150).

Almost surely, 2^616868420044 is an apocalyptic number.

It is an amenable number.

616868420044 is a deficient number, since it is larger than the sum of its proper divisors (464548541756).

616868420044 is a wasteful number, since it uses less digits than its factorization.

616868420044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271032392 (or 271032390 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 49.

The spelling of 616868420044 in words is "six hundred sixteen billion, eight hundred sixty-eight million, four hundred twenty thousand, forty-four".