6920168161 has 4 divisors (see below), whose sum is σ = 7143399424. Its totient is φ = 6696936900.

The previous prime is 6920168137. The next prime is 6920168179. The reversal of 6920168161 is 1618610296.

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 6920168161 - 2²¹ = 6918071009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6920168111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111615585 + ... + 111615646.

It is an arithmetic number, because the mean of its divisors is an integer number (1785849856).

Almost surely, 2^6920168161 is an apocalyptic number.

It is an amenable number.

6920168161 is a deficient number, since it is larger than the sum of its proper divisors (223231263).

6920168161 is a wasteful number, since it uses less digits than its factorization.

6920168161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223231262.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 6920168161 is about 83187.5481126833. The cubic root of 6920168161 is about 1905.6313227318.

The spelling of 6920168161 in words is "six billion, nine hundred twenty million, one hundred sixty-eight thousand, one hundred sixty-one".