164309126161 has 4 divisors (see below), whose sum is σ = 165293013312. Its totient is φ = 163325239012.

The previous prime is 164309126089. The next prime is 164309126221. The reversal of 164309126161 is 161621903461.

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 164309126161 - 2⁹ = 164309125649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164309123161) 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, 491943325 + ... + 491943658.

It is an arithmetic number, because the mean of its divisors is an integer number (41323253328).

Almost surely, 2^164309126161 is an apocalyptic number.

It is an amenable number.

164309126161 is a deficient number, since it is larger than the sum of its proper divisors (983887151).

164309126161 is an equidigital number, since it uses as much as digits as its factorization.

164309126161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983887150.

The product of its (nonzero) digits is 46656, while the sum is 40.

The spelling of 164309126161 in words is "one hundred sixty-four billion, three hundred nine million, one hundred twenty-six thousand, one hundred sixty-one".