168660403658875 has 16 divisors (see below), whose sum is σ = 210496828651200. Its totient is φ = 134922781334400.

The previous prime is 168660403658867. The next prime is 168660403658891. The reversal of 168660403658875 is 578856304066861.

It is not a de Polignac number, because 168660403658875 - 2³ = 168660403658867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 168660403658798 and 168660403658807.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24650910 + ... + 30740659.

It is an arithmetic number, because the mean of its divisors is an integer number (13156051790700).

Almost surely, 2^{168660403658875} is an apocalyptic number.

168660403658875 is a deficient number, since it is larger than the sum of its proper divisors (41836424992325).

168660403658875 is an equidigital number, since it uses as much as digits as its factorization.

168660403658875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55415943 (or 55415933 counting only the distinct ones).

The product of its (nonzero) digits is 1393459200, while the sum is 73.

The spelling of 168660403658875 in words is "one hundred sixty-eight trillion, six hundred sixty billion, four hundred three million, six hundred fifty-eight thousand, eight hundred seventy-five".