16399848869 has 2 divisors, whose sum is σ = 16399848870. Its totient is φ = 16399848868.

The previous prime is 16399848859. The next prime is 16399848893. The reversal of 16399848869 is 96884899361.

16399848869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12470188900 + 3929659969 = 111670^2 + 62687^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16399848869 is a prime.

It is a super-2 number, since 2×16399848869² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16399848859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8199924434 + 8199924435.

It is an arithmetic number, because the mean of its divisors is an integer number (8199924435).

Almost surely, 2^16399848869 is an apocalyptic number.

It is an amenable number.

16399848869 is a deficient number, since it is larger than the sum of its proper divisors (1).

16399848869 is an equidigital number, since it uses as much as digits as its factorization.

16399848869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161243136, while the sum is 71.

The spelling of 16399848869 in words is "sixteen billion, three hundred ninety-nine million, eight hundred forty-eight thousand, eight hundred sixty-nine".