16838671885 has 12 divisors (see below), whose sum is σ = 23505411708. Its totient is φ = 11546517696.

The previous prime is 16838671873. The next prime is 16838671907. The reversal of 16838671885 is 58817683861.

It can be written as a sum of positive squares in 2 ways, for example, as 9920757609 + 6917914276 = 99603^2 + 83174^2 .

It is not a de Polignac number, because 16838671885 - 2⁷ = 16838671757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34364392 + ... + 34364881.

It is an arithmetic number, because the mean of its divisors is an integer number (1958784309).

Almost surely, 2^16838671885 is an apocalyptic number.

It is an amenable number.

16838671885 is a deficient number, since it is larger than the sum of its proper divisors (6666739823).

16838671885 is an equidigital number, since it uses as much as digits as its factorization.

16838671885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68729292 (or 68729285 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 61.

The spelling of 16838671885 in words is "sixteen billion, eight hundred thirty-eight million, six hundred seventy-one thousand, eight hundred eighty-five".