12162512051511 has 32 divisors (see below), whose sum is σ = 17817385563648. Its totient is φ = 7348921466880.

The previous prime is 12162512051507. The next prime is 12162512051519. The reversal of 12162512051511 is 11515021526121.

It is a happy number.

It is not a de Polignac number, because 12162512051511 - 2² = 12162512051507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12162512051519) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38901066 + ... + 39212471.

It is an arithmetic number, because the mean of its divisors is an integer number (556793298864).

Almost surely, 2^{12162512051511} is an apocalyptic number.

12162512051511 is a deficient number, since it is larger than the sum of its proper divisors (5654873512137).

12162512051511 is a wasteful number, since it uses less digits than its factorization.

12162512051511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78113671.

The product of its (nonzero) digits is 6000, while the sum is 33.

Adding to 12162512051511 its reverse (11515021526121), we get a palindrome (23677533577632).

The spelling of 12162512051511 in words is "twelve trillion, one hundred sixty-two billion, five hundred twelve million, fifty-one thousand, five hundred eleven".