8616853985437 has 2 divisors, whose sum is σ = 8616853985438. Its totient is φ = 8616853985436.

The previous prime is 8616853985429. The next prime is 8616853985533. The reversal of 8616853985437 is 7345893586168.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7827494590756 + 789359394681 = 2797766^2 + 888459^2 .

It is a cyclic number.

It is not a de Polignac number, because 8616853985437 - 2³ = 8616853985429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8616853985437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8616853985737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4308426992718 + 4308426992719.

It is an arithmetic number, because the mean of its divisors is an integer number (4308426992719).

Almost surely, 2^{8616853985437} is an apocalyptic number.

It is an amenable number.

8616853985437 is a deficient number, since it is larger than the sum of its proper divisors (1).

8616853985437 is an equidigital number, since it uses as much as digits as its factorization.

8616853985437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1045094400, while the sum is 73.

The spelling of 8616853985437 in words is "eight trillion, six hundred sixteen billion, eight hundred fifty-three million, nine hundred eighty-five thousand, four hundred thirty-seven".