165623133411 has 48 divisors (see below), whose sum is σ = 251682013440. Its totient is φ = 104820609600.

The previous prime is 165623133367. The next prime is 165623133421. The reversal of 165623133411 is 114331326561.

165623133411 is a `hidden beast` number, since 1 + 6 + 5 + 6 + 231 + 3 + 3 + 411 = 666.

It is not a de Polignac number, because 165623133411 - 2¹⁰ = 165623132387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165623133421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14585386 + ... + 14596736.

It is an arithmetic number, because the mean of its divisors is an integer number (5243375280).

Almost surely, 2^165623133411 is an apocalyptic number.

165623133411 is a deficient number, since it is larger than the sum of its proper divisors (86058880029).

165623133411 is a wasteful number, since it uses less digits than its factorization.

165623133411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12456 (or 12453 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

Adding to 165623133411 its reverse (114331326561), we get a palindrome (279954459972).

The spelling of 165623133411 in words is "one hundred sixty-five billion, six hundred twenty-three million, one hundred thirty-three thousand, four hundred eleven".