168803919101 has 4 divisors (see below), whose sum is σ = 168805862400. Its totient is φ = 168801975804.

The previous prime is 168803919073. The next prime is 168803919127. The reversal of 168803919101 is 101919308861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101919308861 = 127 ⋅802514243.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168803919101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168803919191) 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, 834941 + ... + 1017218.

It is an arithmetic number, because the mean of its divisors is an integer number (42201465600).

Almost surely, 2^168803919101 is an apocalyptic number.

It is an amenable number.

168803919101 is a deficient number, since it is larger than the sum of its proper divisors (1943299).

168803919101 is an equidigital number, since it uses as much as digits as its factorization.

168803919101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1943298.

The product of its (nonzero) digits is 93312, while the sum is 47.

The spelling of 168803919101 in words is "one hundred sixty-eight billion, eight hundred three million, nine hundred nineteen thousand, one hundred one".