169984064161 has 4 divisors (see below), whose sum is σ = 170060877972. Its totient is φ = 169907250352.

The previous prime is 169984064077. The next prime is 169984064177. The reversal of 169984064161 is 161460489961.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 163430190225 + 6553873936 = 404265^2 + 80956^2 .

It is a cyclic number.

It is not a de Polignac number, because 169984064161 - 2²⁷ = 169849846433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (169984044161) 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, 38403586 + ... + 38408011.

It is an arithmetic number, because the mean of its divisors is an integer number (42515219493).

Almost surely, 2^169984064161 is an apocalyptic number.

It is an amenable number.

169984064161 is a deficient number, since it is larger than the sum of its proper divisors (76813811).

169984064161 is an equidigital number, since it uses as much as digits as its factorization.

169984064161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76813810.

The product of its (nonzero) digits is 2239488, while the sum is 55.

The spelling of 169984064161 in words is "one hundred sixty-nine billion, nine hundred eighty-four million, sixty-four thousand, one hundred sixty-one".