16885439999 has 2 divisors, whose sum is σ = 16885440000. Its totient is φ = 16885439998.

The previous prime is 16885439969. The next prime is 16885440001. The reversal of 16885439999 is 99993458861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16885439999 - 2³² = 12590472703 is a prime.

Together with 16885440001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16885439969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8442719999 + 8442720000.

It is an arithmetic number, because the mean of its divisors is an integer number (8442720000).

Almost surely, 2^16885439999 is an apocalyptic number.

16885439999 is a deficient number, since it is larger than the sum of its proper divisors (1).

16885439999 is an equidigital number, since it uses as much as digits as its factorization.

16885439999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151165440, while the sum is 71.

The spelling of 16885439999 in words is "sixteen billion, eight hundred eighty-five million, four hundred thirty-nine thousand, nine hundred ninety-nine".