165641314226 has 8 divisors (see below), whose sum is σ = 250044532140. Its totient is φ = 82293136848.

The previous prime is 165641314217. The next prime is 165641314243. The reversal of 165641314226 is 622413146561.

It can be written as a sum of positive squares in 2 ways, for example, as 144061998025 + 21579316201 = 379555^2 + 146899^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263759741 + ... + 263760368.

Almost surely, 2^165641314226 is an apocalyptic number.

165641314226 is a deficient number, since it is larger than the sum of its proper divisors (84403217914).

165641314226 is a wasteful number, since it uses less digits than its factorization.

165641314226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527520268.

The product of its digits is 207360, while the sum is 41.

The spelling of 165641314226 in words is "one hundred sixty-five billion, six hundred forty-one million, three hundred fourteen thousand, two hundred twenty-six".