16823735393 has 2 divisors, whose sum is σ = 16823735394. Its totient is φ = 16823735392.

The previous prime is 16823735359. The next prime is 16823735407. The reversal of 16823735393 is 39353732861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8854245409 + 7969489984 = 94097^2 + 89272^2 .

It is an emirp because it is prime and its reverse (39353732861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16823735393 - 2⁶ = 16823735329 is a prime.

It is not a weakly prime, because it can be changed into another prime (16823735303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8411867696 + 8411867697.

It is an arithmetic number, because the mean of its divisors is an integer number (8411867697).

Almost surely, 2^16823735393 is an apocalyptic number.

It is an amenable number.

16823735393 is a deficient number, since it is larger than the sum of its proper divisors (1).

16823735393 is an equidigital number, since it uses as much as digits as its factorization.

16823735393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 50.

The spelling of 16823735393 in words is "sixteen billion, eight hundred twenty-three million, seven hundred thirty-five thousand, three hundred ninety-three".