1681006448853 has 6 divisors (see below), whose sum is σ = 2428120426134. Its totient is φ = 1120670965896.

The previous prime is 1681006448851. The next prime is 1681006448929. The reversal of 1681006448853 is 3588446001861.

1681006448853 is a `hidden beast` number, since 1 + 6 + 8 + 100 + 6 + 4 + 488 + 53 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1614711528369 + 66294920484 = 1270713^2 + 257478^2 .

It is not a de Polignac number, because 1681006448853 - 2¹ = 1681006448851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1681006448853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1681006448851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 93389247150 + ... + 93389247167.

It is an arithmetic number, because the mean of its divisors is an integer number (404686737689).

Almost surely, 2^{1681006448853} is an apocalyptic number.

It is an amenable number.

1681006448853 is a deficient number, since it is larger than the sum of its proper divisors (747113977281).

1681006448853 is a wasteful number, since it uses less digits than its factorization.

1681006448853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186778494323 (or 186778494320 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 54.

The spelling of 1681006448853 in words is "one trillion, six hundred eighty-one billion, six million, four hundred forty-eight thousand, eight hundred fifty-three".