168688451283 has 16 divisors (see below), whose sum is σ = 245410459392. Its totient is φ = 102216492000.

The previous prime is 168688451249. The next prime is 168688451291. The reversal of 168688451283 is 382154886861.

It is not a de Polignac number, because 168688451283 - 2²¹ = 168686354131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (168688458283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291388 + ... + 649833.

It is an arithmetic number, because the mean of its divisors is an integer number (15338153712).

Almost surely, 2^168688451283 is an apocalyptic number.

168688451283 is a deficient number, since it is larger than the sum of its proper divisors (76722008109).

168688451283 is a wasteful number, since it uses less digits than its factorization.

168688451283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946666.

The product of its digits is 17694720, while the sum is 60.

The spelling of 168688451283 in words is "one hundred sixty-eight billion, six hundred eighty-eight million, four hundred fifty-one thousand, two hundred eighty-three".