616857173503 has 2 divisors, whose sum is σ = 616857173504. Its totient is φ = 616857173502.

The previous prime is 616857173497. The next prime is 616857173533. The reversal of 616857173503 is 305371758616.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616857173503 is a prime.

It is a super-2 number, since 2×616857173503² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616857173533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308428586751 + 308428586752.

It is an arithmetic number, because the mean of its divisors is an integer number (308428586752).

Almost surely, 2^616857173503 is an apocalyptic number.

616857173503 is a deficient number, since it is larger than the sum of its proper divisors (1).

616857173503 is an equidigital number, since it uses as much as digits as its factorization.

616857173503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3175200, while the sum is 52.

The spelling of 616857173503 in words is "six hundred sixteen billion, eight hundred fifty-seven million, one hundred seventy-three thousand, five hundred three".