12078392511 has 24 divisors (see below), whose sum is σ = 17155753344. Its totient is φ = 7557091920.

The previous prime is 12078392467. The next prime is 12078392519. The reversal of 12078392511 is 11529387021.

It is a happy number.

It is not a de Polignac number, because 12078392511 - 2⁷ = 12078392383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12078392511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12078392519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63766 + ... + 167996.

It is an arithmetic number, because the mean of its divisors is an integer number (714823056).

Almost surely, 2^12078392511 is an apocalyptic number.

12078392511 is a deficient number, since it is larger than the sum of its proper divisors (5077360833).

12078392511 is a wasteful number, since it uses less digits than its factorization.

12078392511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104379 (or 104360 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 39.

The spelling of 12078392511 in words is "twelve billion, seventy-eight million, three hundred ninety-two thousand, five hundred eleven".