616565366416 has 20 divisors (see below), whose sum is σ = 1235788343100. Its totient is φ = 297652245632.

The previous prime is 616565366413. The next prime is 616565366419. The reversal of 616565366416 is 614663565616.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (616565366413) and next prime (616565366419).

It can be written as a sum of positive squares in 2 ways, for example, as 121647488400 + 494917878016 = 348780^2 + 703504^2 .

It is not an unprimeable number, because it can be changed into a prime (616565366413) 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 in 3 ways as a sum of consecutive naturals, for example, 664401871 + ... + 664402798.

It is an arithmetic number, because the mean of its divisors is an integer number (61789417155).

Almost surely, 2^616565366416 is an apocalyptic number.

It is an amenable number.

616565366416 is an abundant number, since it is smaller than the sum of its proper divisors (619222976684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

616565366416 is a wasteful number, since it uses less digits than its factorization.

616565366416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328804706 (or 1328804700 counting only the distinct ones).

The product of its digits is 13996800, while the sum is 55.

The spelling of 616565366416 in words is "six hundred sixteen billion, five hundred sixty-five million, three hundred sixty-six thousand, four hundred sixteen".