168785477659 has 4 divisors (see below), whose sum is σ = 169237986016. Its totient is φ = 168332969304.

The previous prime is 168785477603. The next prime is 168785477671. The reversal of 168785477659 is 956774587861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 956774587861 = 860309 ⋅1112129.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168785477659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168785477591 and 168785477600.

It is not an unprimeable number, because it can be changed into a prime (168785477359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226253619 + ... + 226254364.

It is an arithmetic number, because the mean of its divisors is an integer number (42309496504).

Almost surely, 2^168785477659 is an apocalyptic number.

168785477659 is a deficient number, since it is larger than the sum of its proper divisors (452508357).

168785477659 is an equidigital number, since it uses as much as digits as its factorization.

168785477659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452508356.

The product of its digits is 711244800, while the sum is 73.

The spelling of 168785477659 in words is "one hundred sixty-eight billion, seven hundred eighty-five million, four hundred seventy-seven thousand, six hundred fifty-nine".