167509202161 has 4 divisors (see below), whose sum is σ = 191439088192. Its totient is φ = 143579316132.

The previous prime is 167509202141. The next prime is 167509202207. The reversal of 167509202161 is 161202905761.

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 not a de Polignac number, because 167509202161 - 2⁵ = 167509202129 is a prime.

It is a super-2 number, since 2×167509202161² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (167509202131) 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, 11964943005 + ... + 11964943018.

It is an arithmetic number, because the mean of its divisors is an integer number (47859772048).

Almost surely, 2^167509202161 is an apocalyptic number.

It is an amenable number.

167509202161 is a deficient number, since it is larger than the sum of its proper divisors (23929886031).

167509202161 is an equidigital number, since it uses as much as digits as its factorization.

167509202161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23929886030.

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 167509202161 in words is "one hundred sixty-seven billion, five hundred nine million, two hundred two thousand, one hundred sixty-one".