168021883449 has 12 divisors (see below), whose sum is σ = 277369458496. Its totient is φ = 96012504792.

The previous prime is 168021883439. The next prime is 168021883453. The reversal of 168021883449 is 944388120861.

It is a happy number.

168021883449 is a `hidden beast` number, since 1 + 6 + 80 + 218 + 8 + 344 + 9 = 666.

It is not a de Polignac number, because 168021883449 - 2⁴ = 168021883433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168021883395 and 168021883404.

It is not an unprimeable number, because it can be changed into a prime (168021883409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1333506949 + ... + 1333507074.

Almost surely, 2^168021883449 is an apocalyptic number.

It is an amenable number.

168021883449 is a deficient number, since it is larger than the sum of its proper divisors (109347575047).

168021883449 is a wasteful number, since it uses less digits than its factorization.

168021883449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2667014036 (or 2667014033 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The spelling of 168021883449 in words is "one hundred sixty-eight billion, twenty-one million, eight hundred eighty-three thousand, four hundred forty-nine".