168918344145 has 48 divisors (see below), whose sum is σ = 310065829632. Its totient is φ = 84776440320.

The previous prime is 168918344117. The next prime is 168918344167. The reversal of 168918344145 is 541443819861.

168918344145 is a `hidden beast` number, since 1 + 6 + 89 + 1 + 83 + 441 + 45 = 666.

It is not a de Polignac number, because 168918344145 - 2¹² = 168918340049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 168918344091 and 168918344100.

It is an unprimeable number.

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 in 47 ways as a sum of consecutive naturals, for example, 5893800 + ... + 5922390.

It is an arithmetic number, because the mean of its divisors is an integer number (6459704784).

Almost surely, 2^168918344145 is an apocalyptic number.

168918344145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

168918344145 is a deficient number, since it is larger than the sum of its proper divisors (141147485487).

168918344145 is a wasteful number, since it uses less digits than its factorization.

168918344145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36342 (or 36339 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The spelling of 168918344145 in words is "one hundred sixty-eight billion, nine hundred eighteen million, three hundred forty-four thousand, one hundred forty-five".