165561006065304 has 16 divisors (see below), whose sum is σ = 413902515163320. Its totient is φ = 55187002021760.

The previous prime is 165561006065281. The next prime is 165561006065417. The reversal of 165561006065304 is 403560600165561.

It is a super-2 number, since 2×165561006065304² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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, 3449187626337 + ... + 3449187626384.

Almost surely, 2^{165561006065304} is an apocalyptic number.

It is an amenable number.

165561006065304 is an abundant number, since it is smaller than the sum of its proper divisors (248341509098016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165561006065304 is a wasteful number, since it uses less digits than its factorization.

165561006065304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6898375252730 (or 6898375252726 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 165561006065304 in words is "one hundred sixty-five trillion, five hundred sixty-one billion, six million, sixty-five thousand, three hundred four".