165011620136 has 32 divisors (see below), whose sum is σ = 338303347200. Its totient is φ = 74832042240.

The previous prime is 165011620127. The next prime is 165011620153. The reversal of 165011620136 is 631026110561.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2127176 + ... + 2203383.

It is an arithmetic number, because the mean of its divisors is an integer number (10571979600).

Almost surely, 2^165011620136 is an apocalyptic number.

It is an amenable number.

165011620136 is an abundant number, since it is smaller than the sum of its proper divisors (173291727064).

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

165011620136 is a wasteful number, since it uses less digits than its factorization.

165011620136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4331009 (or 4331005 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

Adding to 165011620136 its reverse (631026110561), we get a palindrome (796037730697).

The spelling of 165011620136 in words is "one hundred sixty-five billion, eleven million, six hundred twenty thousand, one hundred thirty-six".