168782111101 has 4 divisors (see below), whose sum is σ = 170918593600. Its totient is φ = 166645628604.

The previous prime is 168782111093. The next prime is 168782111107. The reversal of 168782111101 is 101111287861.

168782111101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 168782111101 - 2³ = 168782111093 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 (168782111107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1068241131 + ... + 1068241288.

It is an arithmetic number, because the mean of its divisors is an integer number (42729648400).

Almost surely, 2^168782111101 is an apocalyptic number.

It is an amenable number.

168782111101 is a deficient number, since it is larger than the sum of its proper divisors (2136482499).

168782111101 is an equidigital number, since it uses as much as digits as its factorization.

168782111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136482498.

The product of its (nonzero) digits is 5376, while the sum is 37.

Adding to 168782111101 its reverse (101111287861), we get a palindrome (269893398962).

The spelling of 168782111101 in words is "one hundred sixty-eight billion, seven hundred eighty-two million, one hundred eleven thousand, one hundred one".