16853518399 has 2 divisors, whose sum is σ = 16853518400. Its totient is φ = 16853518398.

The previous prime is 16853518351. The next prime is 16853518411. The reversal of 16853518399 is 99381535861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16853518399 - 2¹⁵ = 16853485631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16853518309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8426759199 + 8426759200.

It is an arithmetic number, because the mean of its divisors is an integer number (8426759200).

Almost surely, 2^16853518399 is an apocalyptic number.

16853518399 is a deficient number, since it is larger than the sum of its proper divisors (1).

16853518399 is an equidigital number, since it uses as much as digits as its factorization.

16853518399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6998400, while the sum is 58.

The spelling of 16853518399 in words is "sixteen billion, eight hundred fifty-three million, five hundred eighteen thousand, three hundred ninety-nine".