11423265165 has 240 divisors, whose sum is σ = 23417019648. Its totient is φ = 5319654912.

The previous prime is 11423265163. The next prime is 11423265167. The reversal of 11423265165 is 56156232411.

11423265165 is a `hidden beast` number, since 11 + 423 + 2 + 65 + 165 = 666.

It is an interprime number because it is at equal distance from previous prime (11423265163) and next prime (11423265167).

It is not a de Polignac number, because 11423265165 - 2¹ = 11423265163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11423265163) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 170496462 + ... + 170496528.

Almost surely, 2^11423265165 is an apocalyptic number.

11423265165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11423265165 is an abundant number, since it is smaller than the sum of its proper divisors (11993754483).

11423265165 is a wasteful number, since it uses less digits than its factorization.

11423265165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 188 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

Adding to 11423265165 its reverse (56156232411), we get a palindrome (67579497576).

The spelling of 11423265165 in words is "eleven billion, four hundred twenty-three million, two hundred sixty-five thousand, one hundred sixty-five".