12155146415 has 16 divisors (see below), whose sum is σ = 14839488768. Its totient is φ = 9556206336.

The previous prime is 12155146397. The next prime is 12155146417. The reversal of 12155146415 is 51464155121.

It is a cyclic number.

It is not a de Polignac number, because 12155146415 - 2⁶ = 12155146351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12155146417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40994 + ... + 161216.

It is an arithmetic number, because the mean of its divisors is an integer number (927468048).

Almost surely, 2^12155146415 is an apocalyptic number.

12155146415 is a deficient number, since it is larger than the sum of its proper divisors (2684342353).

12155146415 is a wasteful number, since it uses less digits than its factorization.

12155146415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120578.

The product of its digits is 24000, while the sum is 35.

The spelling of 12155146415 in words is "twelve billion, one hundred fifty-five million, one hundred forty-six thousand, four hundred fifteen".