12078285135 has 24 divisors (see below), whose sum is σ = 22480401456. Its totient is φ = 5521501440.

The previous prime is 12078285077. The next prime is 12078285157. The reversal of 12078285135 is 53158287021.

It is not a de Polignac number, because 12078285135 - 2⁶ = 12078285071 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8215786 + ... + 8217255.

It is an arithmetic number, because the mean of its divisors is an integer number (936683394).

Almost surely, 2^12078285135 is an apocalyptic number.

12078285135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12078285135 is a deficient number, since it is larger than the sum of its proper divisors (10402116321).

12078285135 is a wasteful number, since it uses less digits than its factorization.

12078285135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16433063 (or 16433056 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 42.

The spelling of 12078285135 in words is "twelve billion, seventy-eight million, two hundred eighty-five thousand, one hundred thirty-five".