12162242565 has 96 divisors (see below), whose sum is σ = 24081318144. Its totient is φ = 5620792320.

The previous prime is 12162242467. The next prime is 12162242621. The reversal of 12162242565 is 56524226121.

12162242565 is a `hidden beast` number, since 1 + 2 + 1 + 622 + 4 + 25 + 6 + 5 = 666.

It is not a de Polignac number, because 12162242565 - 2²⁴ = 12145465349 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3561799 + ... + 3565211.

It is an arithmetic number, because the mean of its divisors is an integer number (250847064).

Almost surely, 2^12162242565 is an apocalyptic number.

12162242565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12162242565 is a deficient number, since it is larger than the sum of its proper divisors (11919075579).

12162242565 is a wasteful number, since it uses less digits than its factorization.

12162242565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3771 (or 3768 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

Adding to 12162242565 its reverse (56524226121), we get a palindrome (68686468686).

The spelling of 12162242565 in words is "twelve billion, one hundred sixty-two million, two hundred forty-two thousand, five hundred sixty-five".