168666043 has 32 divisors (see below), whose sum is σ = 212921856. Its totient is φ = 130076928.

The previous prime is 168666041. The next prime is 168666049. The reversal of 168666043 is 340666861.

It is a cyclic number.

It is not a de Polignac number, because 168666043 - 2¹ = 168666041 is a prime.

It is a super-2 number, since 2×168666043² = 56896468122555698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 168665987 and 168666005.

It is not an unprimeable number, because it can be changed into a prime (168666041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1034680 + ... + 1034842.

It is an arithmetic number, because the mean of its divisors is an integer number (6653808).

Almost surely, 2^168666043 is an apocalyptic number.

168666043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

168666043 is a deficient number, since it is larger than the sum of its proper divisors (44255813).

168666043 is a wasteful number, since it uses less digits than its factorization.

168666043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 168666043 is about 12987.1491482927. The cubic root of 168666043 is about 552.5130650801.

The spelling of 168666043 in words is "one hundred sixty-eight million, six hundred sixty-six thousand, forty-three".