12165642342524 has 72 divisors (see below), whose sum is σ = 25109894312496. Its totient is φ = 5111017632000.

The previous prime is 12165642342349. The next prime is 12165642342547. The reversal of 12165642342524 is 42524324656121.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 8689067 + ... + 9991554.

It is an arithmetic number, because the mean of its divisors is an integer number (348748532118).

Almost surely, 2^{12165642342524} is an apocalyptic number.

It is an amenable number.

12165642342524 is an abundant number, since it is smaller than the sum of its proper divisors (12944251969972).

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

12165642342524 is a wasteful number, since it uses less digits than its factorization.

12165642342524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18680715 (or 18680694 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 47.

Adding to 12165642342524 its reverse (42524324656121), we get a palindrome (54689966998645).

The spelling of 12165642342524 in words is "twelve trillion, one hundred sixty-five billion, six hundred forty-two million, three hundred forty-two thousand, five hundred twenty-four".