168216711 has 16 divisors (see below), whose sum is σ = 245505120. Its totient is φ = 101819520.

The previous prime is 168216701. The next prime is 168216743. The reversal of 168216711 is 117612861.

It is a happy number.

It is not a de Polignac number, because 168216711 - 2¹³ = 168208519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168216701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32976 + ... + 37733.

It is an arithmetic number, because the mean of its divisors is an integer number (15344070).

Almost surely, 2^168216711 is an apocalyptic number.

168216711 is a deficient number, since it is larger than the sum of its proper divisors (77288409).

168216711 is a wasteful number, since it uses less digits than its factorization.

168216711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70786.

The product of its digits is 4032, while the sum is 33.

The square root of 168216711 is about 12969.8385109453. The cubic root of 168216711 is about 552.0219909586.

It can be divided in two parts, 16821 and 6711, that added together give a palindrome (23532).

The spelling of 168216711 in words is "one hundred sixty-eight million, two hundred sixteen thousand, seven hundred eleven".